JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank

done Ionisation Energy Total Questions - 89

• question_answer1)
  The incorrect statement among the following is [IIT-JEE 1997]
  A)
  The first ionisation potential of \[Al\] is less than the first ionisation potential of \[Mg\] done clear
  B)
  The second ionisation potential of \[Mg\] is greater than the second ionisation potential of \[Na\] done clear
  C)
  The first ionisation potential of \[Na\] is less than the first ionisation potential of \[Mg\] done clear
  D)
  The third ionisation potential of \[Mg\] is greater than the third ionisation potential of \[Al\] done clear
  View Solution play_arrow

• question_answer2)
  The second ionisation potential of an element \[M\] is the energy required to [JIPMER 1997]
  A)
  Remove one mole of electron from one mole of gaseous anion done clear
  B)
  Remove one mole of electron from one mole of gaseous cation of the element done clear
  C)
  Remove one mole of electron from one mole of monovalent gaseous cation of the element done clear
  D)
  Remove 2 moles of electrons from one mole of gaseous atoms done clear
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• question_answer3)
  The ionization energy of an element is
  A)
  The same as the electron affinity of the element done clear
  B)
  Equal in magnitude but of opposite sign to the electron affinity of the element done clear
  C)
  The energy released when an electron is added to an atom of the element done clear
  D)
  The energy required to remove the outermost electron of an atom of the element done clear
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• question_answer4)
  The first ionisation energies of alkaline earth metals are higher than those of the alkali metals. This is because   [MP PET 1996]
  A)
  There is increase in the nuclear charge of the alkaline earth metals done clear
  B)
  There is a decrease in the nuclear charge of the alkaline earth metals done clear
  C)
  There is no change in the nuclear charge done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer5)
  The statement that is not correct for the periodic classification of elements is [IIT-JEE 1992]
  A)
  The properties of elements are the periodic functions of their atomic numbers done clear
  B)
  Non-metallic elements are lesser in number than metallic elements done clear
  C)
  The first ionisation energies along a period do not vary in a regular manner with increase in atomic number done clear
  D)
  For transition elements the \[d\]-sub-shells are filled with electrons monotonically with increase in atomic number done clear
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• question_answer6)
  Choose the correct statement
  A)
  Ionization energy and electron affinity increases across a period done clear
  B)
  Ionization energy increases but electron affinity decreases along a period done clear
  C)
  Ionization energy decreases but electron affinity increases done clear
  D)
  Both decreases along a period done clear
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• question_answer7)
  In halogens, with the increase of atomic number which habit is found
  A)
  Habit to loose electrons decreases done clear
  B)
  Ionic radii decreases done clear
  C)
  Ionization potential decreases done clear
  D)
  In \[M{{X}_{2}}\,(M=\] metal and \[X=\] halogen), covalent properties decreases done clear
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• question_answer8)
  Ionization potential is lowest for [CPMT 1989; MP PET 2001]
  A)
  Halogens done clear
  B)
  Inert gases done clear
  C)
  Alkaline earth metals done clear
  D)
  Alkali metals done clear
  View Solution play_arrow

• question_answer9)
  Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens [NCERT 1978]
  A)
  The ionization energy of hydrogen is to high for group of alkali metals, but too low of halogen group done clear
  B)
  Hydrogen can form compounds with all other elements done clear
  C)
  Hydrogen is much lighter element than the alkali metals or the halogens done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer10)
  The ionization energy of nitrogen is more than that of oxygen because [MP PET 1993]
  A)
  Nitrogen has half filled p-orbitals done clear
  B)
  Nitrogen is left to the oxygen in the same period of the periodic table done clear
  C)
  Nitrogen contains less number of electrons done clear
  D)
  Nitrogen is less electronegative done clear
  View Solution play_arrow

• question_answer11)
  The energy required to remove an electron of a gaseous atom from its ground state is called [CPMT 1989, 94]
  A)
  Potential energy done clear
  B)
  Ionization energy done clear
  C)
  Electrode potential done clear
  D)
  Activation energy done clear
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• question_answer12)
  The first ionization energy of boron is less than that of beryllium because
  A)
  Boron has higher nuclear charge done clear
  B)
  Atomic size of boron is more than that of beryllium done clear
  C)
  Boron has only one electron in p-sub-shell done clear
  D)
  Atomic size of boron is less than that of beryllium done clear
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• question_answer13)
  \[A\to {{A}^{+}}+e,\,\,{{E}_{1}}\] and \[{{A}^{+}}\to {{A}^{2+}}+e,\,\,{{E}_{2}}\]. The energy required to pull out the two electrons are \[{{E}_{1}}\] and \[{{E}_{2}}\] respectively. The correct relationship between two energy would be
  A)
  \[{{E}_{1}}<\,{{E}_{2}}\] done clear
  B)
  \[{{E}_{1}}={{E}_{2}}\] done clear
  C)
  \[{{E}_{1}}>{{E}_{2}}\] done clear
  D)
  \[{{E}_{1}}\ne {{E}_{2}}\] done clear
  View Solution play_arrow

• question_answer14)
  Which of the following element has maximum, first ionisation potential   [AIIMS 2001]
  A)
  V done clear
  B)
  Ti done clear
  C)
  Cr done clear
  D)
  Mn done clear
  View Solution play_arrow

• question_answer15)
  Highest energy will be absorbed to eject out the electron in the configuration [RPMT 2000]
  A)
  \[1{{s}^{2}}2{{s}^{2}}2{{p}^{1}}\] done clear
  B)
  \[1{{s}^{2}}2{{s}^{2}}2{{p}^{3}}\] done clear
  C)
   \[1{{s}^{2}}2{{s}^{2}}2{{p}^{2}}\] done clear
  D)
  \[1{{s}^{2}}2{{s}^{2}}2{{p}^{4}}\] done clear
  View Solution play_arrow

• question_answer16)
  In which of the following process highest energy is absorbed [RPET 2000]
  A)
  \[Cu\to C{{u}^{+}}\] done clear
  B)
  \[Br\to B{{r}^{-}}\] done clear
  C)
  \[I\to {{I}^{-}}\] done clear
  D)
  \[Li\to L{{i}^{+}}\] done clear
  View Solution play_arrow

• question_answer17)
  The first ionization potential of Na, Mg, Al and Si are in the order [IIT 1988; MP PMT 2000]
  A)
  Na < Mg > Al < Si done clear
  B)
  Na > Mg > Al > Si done clear
  C)
  Na < Mg < Al > Si done clear
  D)
  Na > Mg > Al < Si done clear
  View Solution play_arrow

• question_answer18)
  How many ionisation energies can carbon have
  A)
  1 done clear
  B)
  2 done clear
  C)
  4 done clear
  D)
  6 done clear
  View Solution play_arrow

• question_answer19)
  Which of the following gaseous atoms has highest value of \[IE\] [JIPMER 1997; CPMT 1997; AIIMS 2000]
  A)
  \[P\] done clear
  B)
  \[Si\] done clear
  C)
  \[Mg\] done clear
  D)
  \[Al\] done clear
  View Solution play_arrow

• question_answer20)
  Hydrogen has high ionization energy than alkali metals, due to its [AIIMS 1999]
  A)
  Large size done clear
  B)
  Small size done clear
  C)
  Ionic bond done clear
  D)
  Covalent bond done clear
  View Solution play_arrow

• question_answer21)
  The first ionization potentials \[\left( eV \right)\] of \[Be\] and \[B\] respectively are [CBSE PMT 1998]
  A)
  \[8.29eV\], \[9.32eV\] done clear
  B)
  \[9.32eV\], \[9.32eV\] done clear
  C)
  \[8.29eV\], \[8.29eV\] done clear
  D)
  \[9.32eV\], \[8.29eV\] done clear
  View Solution play_arrow

• question_answer22)
  Which ionisation potential \[\left( IP \right)\] in the following equations involves the greatest amount of energy [Pune CET 1998]
  A)
  \[Na\to N{{a}^{+}}+{{e}^{-}}\] done clear
  B)
  \[{{K}^{+}}\to {{K}^{2+}}+{{e}^{-}}\] done clear
  C)
  \[{{C}^{2+}}\to {{C}^{3+}}+{{e}^{-}}\] done clear
  D)
  \[C{{a}^{+}}\to C{{a}^{2+}}+{{e}^{-}}\] done clear
  View Solution play_arrow

• question_answer23)
  Which of the following has maximum ionization potential [MH CET 1999]
  A)
  K done clear
  B)
  Na done clear
  C)
  Al done clear
  D)
  Mg done clear
  View Solution play_arrow

• question_answer24)
  The first four ionization energy values of an element are 191, 578, 872 and 5962 kcal. The number of valence electrons in the element is
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer25)
  Which of the following has least ionization potential [CPMT 1982, 93]
  A)
  Li done clear
  B)
  Cs done clear
  C)
  Cl done clear
  D)
  I done clear
  View Solution play_arrow

• question_answer26)
  Which of the following element has the lowest ionization potential [CPMT 1976; RPMT 2002]
  A)
  Fe done clear
  B)
  H done clear
  C)
  Li done clear
  D)
  He done clear
  View Solution play_arrow

• question_answer27)
  As one moves along a given row in the periodic table, ionization energy [CPMT 1976, 89; NCERT 1978; EAMCET 1985]
  A)
  Remains same done clear
  B)
  Increases from left to right done clear
  C)
  First increases, then decreases done clear
  D)
  Decreases from left to right done clear
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• question_answer28)
  Ionization energy is highest for [AFMC 2001; BVP 2003]
  A)
  Noble gases done clear
  B)
  Platinum metals done clear
  C)
  Transition elements done clear
  D)
  Inner-transition elements done clear
  View Solution play_arrow

• question_answer29)
  Which one of the following elements has the highest ionisation energy [IIT-JEE 1990]
  A)
  \[[Ne]\,3{{s}^{2}}\,3{{p}^{1}}\] done clear
  B)
  \[[Ne]\,3{{s}^{2}}\,3{{p}^{2}}\] done clear
  C)
  \[[Ne]\,3{{s}^{2}}\,3{{p}^{3}}\] done clear
  D)
  \[[Ar]\,3{{d}^{10}}\,4{{s}^{2}}\,4{{p}^{2}}\] done clear
  View Solution play_arrow

• question_answer30)
  Which of the following elements has the lowest ionistion potential [EAMCET 1993]
  A)
  N done clear
  B)
  O done clear
  C)
  F done clear
  D)
  Ne done clear
  View Solution play_arrow

• question_answer31)
  Which of the following has lowest first ionisation potential [CPMT 1993]
  A)
  B done clear
  B)
  C done clear
  C)
  N done clear
  D)
  O done clear
  View Solution play_arrow

• question_answer32)
  If first orbit energy of \[H{{e}^{+}}\] is - 54.4 eV, then the second orbit energy will be [Roorkee 1995]
  A)
  - 54.4 eV done clear
  B)
  - 13.6 eV done clear
  C)
  - 27.2 eV done clear
  D)
  + 27.2 eV done clear
  View Solution play_arrow

• question_answer33)
  The screening effect of inner electrons of the nucleus causes [MP PMT 1994]
  A)
  A decrease in the ionisation potential done clear
  B)
  An increase in the ionisation potential done clear
  C)
  No effect on the ionisation potential done clear
  D)
  An increase in the attraction of the nucleus to the electrons done clear
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• question_answer34)
  Which of the following has highest first ionization energy [MP PET 1994]
  A)
  Sulphur done clear
  B)
  Oxygen done clear
  C)
  Nitrogen done clear
  D)
  Phosphorus done clear
  View Solution play_arrow

• question_answer35)
  The second ionization potential is [Bihar CEE 1995; CET Pune 1998]
  A)
  Less than the first ionization potential done clear
  B)
  Equal to the first ionization potential done clear
  C)
  Greater than the first ionization potential done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer36)
  When the first ionization energies are plotted against atomic number the peaks are occupied [CET Pune 1998]
  A)
  Alkali metals done clear
  B)
  Halogens done clear
  C)
  Rare gases done clear
  D)
  Transition elements done clear
  View Solution play_arrow

• question_answer37)
  Among the following which has the highest first ionization energy
  A)
  \[K\] done clear
  B)
  \[Na\] done clear
  C)
  \[B\] done clear
  D)
  \[Kr\] done clear
  View Solution play_arrow

• question_answer38)
  The first ionisation potential will be maximum for [CPMT 2000]
  A)
  Lithium done clear
  B)
  Hydrogen done clear
  C)
  Uranium done clear
  D)
  Iron done clear
  View Solution play_arrow

• question_answer39)
  Arrange S, P, As in order of increasing ionisation energy  [JIPMER (Med.) 2002]
  A)
  \[S<P<As\] done clear
  B)
  \[P<S<As\] done clear
  C)
  \[As<S<P\] done clear
  D)
  \[As<P<S\] done clear
  View Solution play_arrow

• question_answer40)
  With reference to concept of ionisation potential, which one of the following sets are correct [Kurukshetra CEE 1991]
  A)
  \[U>K>Cs\] done clear
  B)
  \[B>U>K\] done clear
  C)
  \[Cs>U>B\] done clear
  D)
  \[Cs<U<K\] done clear
  View Solution play_arrow

• question_answer41)
  Which among the following species has the highest ionisation potential  [KCET 2001]
  A)
  B done clear
  B)
  Li done clear
  C)
  Ne done clear
  D)
  F done clear
  View Solution play_arrow

• question_answer42)
  The set representing the correct order of first ionisation potential is   [IIT-JEE (Screening) 2001]
  A)
  \[K>Na>Li\] done clear
  B)
  \[Be>Mg>Ca\] done clear
  C)
  \[B>C>N\] done clear
  D)
  \[Ge>Si>C\] done clear
  View Solution play_arrow

• question_answer43)
  Among the following options, the sequence of increasing first ionisation potential will be [AIIMS 2000; MP PMT 2002]
  A)
  \[B<C<N\] done clear
  B)
  \[B>C>N\]  done clear
  C)
  \[C<B<N\] done clear
  D)
  \[N>C>B\] done clear
  View Solution play_arrow

• question_answer44)
  The decreasing order of the ionisation potential in the following elements is [MP PMT 2001]
  A)
  \[Ne>Cl>P>S>Al>Mg\] done clear
  B)
  \[Ne>Cl>P>S>Mg>Al\] done clear
  C)
  \[Ne>Cl>S>P>Mg>Al\] done clear
  D)
  \[Ne>Cl>S>P>Al>Mg\] done clear
  View Solution play_arrow

• question_answer45)
  Which is the correct order of the first ionization potential of N, O and C [AMU 2000]
  A)
  \[C>N>O\] done clear
  B)
  \[C<N>O\] done clear
  C)
  \[O>N>O\] done clear
  D)
  \[C>N\]~\[O\] done clear
  View Solution play_arrow

• question_answer46)
  Which of the following order is wrong  [CBSE 2002]
  A)
  \[N{{H}_{3}}<P{{H}_{3}}<As{{H}_{3}}\]-acidic nature done clear
  B)
  \[L{{i}^{+}}<N{{a}^{+}}<{{K}^{+}}<C{{s}^{+}}\]-ionic radius done clear
  C)
  \[A{{l}_{2}}{{O}_{3}}<MgO<N{{a}_{2}}O<{{K}_{2}}O\]-basic done clear
  D)
  \[Li<Be<B<C\]-1st ionisation potential done clear
  View Solution play_arrow

• question_answer47)
  Which of the following has the least ionization potential [MP PET 2002]
  A)
  Lithium (Li) done clear
  B)
  Helium (He) done clear
  C)
  Nitrogen (N) done clear
  D)
  Zinc (Zn) done clear
  View Solution play_arrow

• question_answer48)
  The first ionisation energy of lithium will be [EAMCET 1990]
  A)
  Greater than \[Be\] done clear
  B)
  Less than \[Be\] done clear
  C)
  Equal to that of \[Na\] done clear
  D)
  Equal to that of \[F\] done clear
  View Solution play_arrow

• question_answer49)
  Spectrum of \[L{{i}^{2+}}\] is similar to that of  [AIIMS 2002]
  A)
  H done clear
  B)
  He done clear
  C)
  Be done clear
  D)
  Ne done clear
  View Solution play_arrow

• question_answer50)
  Highest ionisation energy stands for  [DPMT 2000]
  A)
  He done clear
  B)
  C done clear
  C)
  N done clear
  D)
  H done clear
  View Solution play_arrow

• question_answer51)
  Which of the following electrons should have the highest value of ionisation energy (for the same value of the principal quantum number)
  A)
  s done clear
  B)
  p done clear
  C)
  d done clear
  D)
  f done clear
  View Solution play_arrow

• question_answer52)
  The correct sequence of elements in decreasing order of first ionisation energy is [MP PET 1997]
  A)
  \[Na>Mg>Al\] done clear
  B)
  \[Mg>Na>Al\] done clear
  C)
  \[Al>Mg>Na\] done clear
  D)
  \[Mg>Al>Na\] done clear
  View Solution play_arrow

• question_answer53)
  Correct order of polarising power is  [MP PMT 2003; BHU 2003]
  A)
  \[C{{s}^{+}}<{{K}^{+}}<M{{g}^{2+}}<A{{l}^{3+}}\] done clear
  B)
  \[{{K}^{+}}<C{{s}^{+}}<M{{g}^{2+}}<A{{l}^{3+}}\] done clear
  C)
  \[C{{s}^{+}}<{{K}^{+}}<A{{l}^{3+}}<M{{g}^{2+}}\] done clear
  D)
  \[{{K}^{+}}<C{{s}^{+}}<A{{l}^{3+}}<M{{g}^{2+}}\] done clear
  View Solution play_arrow

• question_answer54)
  Correct increasing order of first ionistion potential is [UPSEAT 2003]
  A)
  \[Na<Mg>Al<Si\] done clear
  B)
  \[Na<Mg<Al<Si\] done clear
  C)
  \[Na>Mg>Al>Si\] done clear
  D)
    \[Na<Mg<Al>Si\] done clear
  View Solution play_arrow

• question_answer55)
  The ionisation potential of hydrogen from ground state to the first excited state is [DCE 2001]
  A)
  \[-13.6\,\,eV\] done clear
  B)
  \[13.6\,\,eV\] done clear
  C)
  \[-3.4\,eV\] done clear
  D)
  \[3.4\,\,eV\] done clear
  View Solution play_arrow

• question_answer56)
  In view of their low ionisation energies the alkali metals are [MP PMT 2002]
  A)
  Weak oxidising agents done clear
  B)
  Strong reducing agents done clear
  C)
  Strong oxidising agents done clear
  D)
  Weak reducing agents done clear
  View Solution play_arrow

• question_answer57)
  Of the following iso-electronic ions, the one which has the lowest ionisation potential is [AMU 1999]
  A)
  \[N{{a}^{+}}\] done clear
  B)
  \[M{{g}^{++}}\] done clear
  C)
  \[{{F}^{-}}\] done clear
  D)
  \[{{O}^{--}}\] done clear
  View Solution play_arrow

• question_answer58)
  Ionisation energy in group I-A varies in the decreasing order as  [Orissa JEE 2005]
  A)
  \[Li>Na>K>Cs\] done clear
  B)
  \[Na>Li>K>Cs\] done clear
  C)
  \[Li>Cs>K>Na\] done clear
  D)
  \[K>Cs>Na>Li\] done clear
  View Solution play_arrow

• question_answer59)
  Which of the following relation is correct with respect to first (I) and second (II) ionization potentials of sodium and magnesium [CPMT 1999]
  A)
  \[{{I}_{Mg}}=I{{I}_{Na}}\] done clear
  B)
  \[{{I}_{Na}}>{{I}_{Mg}}\] done clear
  C)
  \[I{{I}_{Mg}}>I{{I}_{Na}}\] done clear
  D)
  \[I{{I}_{Na}}>I{{I}_{Mg}}\] done clear
  View Solution play_arrow

• question_answer60)
  The order of the magnitude of first ionisation potentials of Be, B, N and O is [MP PMT 1996]
  A)
  \[N>O>Be>B\] done clear
  B)
  \[N>Be>O>B\] done clear
  C)
  \[Be>B>N>O\] done clear
  D)
  \[B>Be>O>N\] done clear
  View Solution play_arrow

• question_answer61)
  Which of the following transitions involves maximum amount of energy [AIIMS 1992]
  A)
  \[{{M}^{-}}(g)\to M(g)\] done clear
  B)
  \[M(g)\to {{M}^{+}}(g)\] done clear
  C)
  \[{{M}^{+}}(g)\to {{M}^{2+}}(g)\] done clear
  D)
  \[{{M}^{2+}}(g)\to {{M}^{3+}}(g)\] done clear
  View Solution play_arrow

• question_answer62)
  Which of the following species has lowest ionization potential [KCET 1996]
  A)
  \[O\] done clear
  B)
  \[{{O}_{2}}\] done clear
  C)
  \[O_{2}^{+}\] done clear
  D)
  \[O_{2}^{-}\] done clear
  View Solution play_arrow

• question_answer63)
  Which of the following has minimum ionization energy [JIPMER 1999]
  A)
  Ge done clear
  B)
  Se done clear
  C)
  As done clear
  D)
  Br done clear
  View Solution play_arrow

• question_answer64)
  First I.P. of \[Mg\] is ...... than \[Al\] [CPMT 1997]
  A)
  Less done clear
  B)
  More done clear
  C)
  Equal done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer65)
  The element with highest value of ionization potential is
  A)
  Potassium done clear
  B)
  Helium done clear
  C)
  Hydrogen done clear
  D)
  Xenon done clear
  View Solution play_arrow

• question_answer66)
  Which has the highest second ionisation potential [AIIMS 1991]
  A)
  Nitrogen done clear
  B)
  Carbon done clear
  C)
  Oxygen done clear
  D)
  Fluorine done clear
  View Solution play_arrow

• question_answer67)
  In ionisation of hydrogen, the energy required is [CPMT 1996]
  A)
  \[13.6eV\] done clear
  B)
  \[>13.6eV\] done clear
  C)
  \[<13.6eV\] done clear
  D)
  \[1.5eV\] done clear
  View Solution play_arrow

• question_answer68)
  Which of the following elements will have the lowest first ionisation energy [KCET 1992]
  A)
  \[Mg\] done clear
  B)
  \[Rb\] done clear
  C)
  \[Li\] done clear
  D)
  \[Ca\] done clear
  View Solution play_arrow

• question_answer69)
  In the long form of periodic table, the element having lowest ionisation potentials are present in [EAMCET 1992]
  A)
  I group done clear
  B)
  IV group done clear
  C)
  VII group done clear
  D)
  Zero group done clear
  View Solution play_arrow

• question_answer70)
  The process requiring the absorption of energy is [Roorkee 1990]
  A)
  \[F\to {{F}^{-}}\] done clear
  B)
  \[Cl\to C{{l}^{-}}\] done clear
  C)
  \[O\to {{O}^{2-}}\] done clear
  D)
  \[H\to {{H}^{-}}\] done clear
  View Solution play_arrow

• question_answer71)
  In a period from \[Li\] to \[F\], ionization potential [CPMT 1982]
  A)
  Increases done clear
  B)
  Decreases done clear
  C)
  Remains same done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer72)
  Ionization energy increases in the order
  A)
  \[Be,\,B,\,C,\,N\] done clear
  B)
  \[B,\,Be,\,C,\,N\] done clear
  C)
  \[C,\,N,\,Be,\,B\] done clear
  D)
  \[N,\,C,\,Be,\,B\] done clear
  View Solution play_arrow

• question_answer73)
  A neutral atom will have the lowest ionization potential when its electronic configuration is [NCERT 1978; CBSE PMT 1991]
  A)
  \[1{{s}^{1}}\] done clear
  B)
  \[1{{s}^{2}},\,2{{s}^{2}}{{p}^{6}}\] done clear
  C)
  \[1{{s}^{2}},\,2{{s}^{2}}{{p}^{2}}\] done clear
  D)
  \[1{{s}^{2}},\,2{{s}^{2}}{{p}^{6}},\,3{{s}^{1}}\] done clear
  View Solution play_arrow

• question_answer74)
  Which has maximum first ionization potential [IIT 1982; EAMCET 1997; KCET (Med.) 1999; KCET 2000]
  A)
  C done clear
  B)
  N done clear
  C)
  B done clear
  D)
  O done clear
  View Solution play_arrow

• question_answer75)
  Which one of the following elements has the highest ionisation energy
  A)
  Na done clear
  B)
  Mg done clear
  C)
  C done clear
  D)
  F done clear
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• question_answer76)
  Order of first ionization potentials of elements Li, Be, B, Na is [Kerala CET 2005]
  A)
  Li > Be >B > Na done clear
  B)
  Be >B > Li > Na done clear
  C)
  Na > Li > B > Be done clear
  D)
  Be > Li > B > Na done clear
  E)
  B > Be > Li > Na done clear
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• question_answer77)
  The ionization energy of nitrogen is larger than that of oxygen because of [RPMT 1997; DCE 1999]
  A)
  Greater attraction of electrons by the nucleus done clear
  B)
  The size of nitrogen atom being smaller done clear
  C)
  The half-filled \[p\]-orbitals  possess extra stability done clear
  D)
  Greater penetration effect done clear
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• question_answer78)
  If the IP of \[Na\] is 5.48 eV, the ionisation potential of \[K\] will be [EAMCET 1988]
  A)
  Same as that of \[Na\] done clear
  B)
  5.68 eV done clear
  C)
  4.34 eV done clear
  D)
  10.88 eV done clear
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• question_answer79)
  Mg and Li are similar in their properties due to  [AFMC 2004]
  A)
  Same e/m ratio done clear
  B)
  Same electron affinity done clear
  C)
  Same group done clear
  D)
  Same ionic potential done clear
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• question_answer80)
  The formation of the oxide ion \[O_{(g)}^{2-}\] requires first an exothermic and then an endothermic step as shown below   \[{{O}_{(g)}}+{{e}^{-}}=O_{(g)}^{-}\Delta {{H}^{0}}=-142\ kJmo{{l}^{-1}}\] \[O_{(g)}^{-}+{{e}^{-}}=O_{(g)}^{2-}\Delta {{H}^{0}}=844\ kJmo{{l}^{-1}}\] This is because [AIEEE 2004]
  A)
  \[{{O}^{-}}\] ion will tend to resist the addition of another electron done clear
  B)
  Oxygen has high electron affinity done clear
  C)
  Oxygen is more electronegative done clear
  D)
  \[{{O}^{-}}\]ion has comparatively larger size than oxygen atom done clear
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• question_answer81)
  Which is correct about ionisation potential [MHCET 2003]
  A)
  It is independent of atomic radii done clear
  B)
  It increases with increase in atomic radii done clear
  C)
  It remains constant with increase in atomic radii done clear
  D)
  It decreases with increase in atomic radii done clear
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• question_answer82)
  Flourine is the best oxidising agent because it has  [CPMT 2004]
  A)
  Highest electron affinity done clear
  B)
  Highest \[E_{\text{red}}^{\text{0}}\] done clear
  C)
  Highest \[E_{\text{oxid}}^{\text{0}}\] done clear
  D)
  Lowest electron affinity done clear
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• question_answer83)
  Which among the following elements have lowest value of \[I{{E}_{1}}\]   [CPMT 2004]
  A)
  Pb done clear
  B)
  Sn done clear
  C)
  Si done clear
  D)
  C done clear
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• question_answer84)
  In a given shell, the order of screening effect is   [Kerala PMT 2004]
  A)
  \[s>p>d>f\] done clear
  B)
  \[f>d>p>s\] done clear
  C)
  \[p<d<s<f\] done clear
  D)
  \[d>f<s>p\] done clear
  E)
  \[f>p>s>d\] done clear
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• question_answer85)
  Which of the following has the highest first ionisation energy [BHU 2004]
  A)
  Li done clear
  B)
  Be done clear
  C)
  B done clear
  D)
  C done clear
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• question_answer86)
  Which one of the following sets of ions represents the collection of isoelectronic species   [AIEEE 2004]
  A)
  \[{{K}^{+}},C{{l}^{-}},M{{g}^{2+}},S{{c}^{3+}}\] done clear
  B)
  \[N{{a}^{+}},C{{a}^{2+}},S{{c}^{3+}},{{F}^{-}}\] done clear
  C)
  \[{{K}^{+}},C{{a}^{2+}},S{{c}^{3+}},C{{l}^{-}}\] done clear
  D)
  \[N{{a}^{+}},M{{g}^{2+}},A{{l}^{3+}},Cl\] done clear
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• question_answer87)
  The correct order of reactivity of halogens is [MHCET 2003]
  A)
  \[F>Cl>Br>I\] done clear
  B)
  \[F<Cl>Br<I\] done clear
  C)
  \[F<Cl<Br<I\] done clear
  D)
  \[F<Cl<Br>I\] done clear
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• question_answer88)
  The first ionisation potential is maximum for [CPMT 2004]
  A)
  B done clear
  B)
  N done clear
  C)
  O done clear
  D)
  Be done clear
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• question_answer89)
  The correct order of ionisation energy for comparing carbon, nitrogen and oxygen atoms is [UPSEAT 2004]
  A)
  \[C>N>O\] done clear
  B)
  \[C>N<O\] done clear
  C)
  \[C<N>O\] done clear
  D)
  \[C<N<O\] done clear
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