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

done Self Evaluation Test - Classification of Elements and Periodicity in Properties Total Questions - 60

• question_answer1)
  \[N{{a}^{+}},\ M{{g}^{2+}},A{{l}^{3+}}\] and \[S{{i}^{4+}}\] are isoelectronic. The order of their ionic size is
  A)
  \[N{{a}^{+}}>\ M{{g}^{2+}}<A{{l}^{3+}}<S{{i}^{4+}}\] done clear
  B)
  \[N{{a}^{+}}<\ M{{g}^{2+}}>A{{l}^{3+}}>S{{i}^{4+}}\] done clear
  C)
  \[N{{a}^{+}}>\ M{{g}^{2+}}>A{{l}^{3+}}>S{{i}^{4+}}\] done clear
  D)
  \[N{{a}^{+}}<\ M{{g}^{2+}}>A{{l}^{3+}}<S{{i}^{4+}}\] done clear
  View Solution play_arrow

• question_answer2)

  Consider the following changes \[A\to {{A}^{+}}+{{e}^{-}}:{{E}_{1}}\] 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 energies would be

  A)
  \[{{E}_{1}}<{{E}_{2}}\]          done clear
  B)
  \[{{E}_{1}}={{E}_{2}}\] done clear
  C)
  \[{{E}_{1}}>{{E}_{2}}\]          done clear
  D)
  \[{{E}_{1}}\ge {{E}_{2}}\] done clear
  View Solution play_arrow

• question_answer3)
  The elements with zero electron affinity are
  A)
  Boron and Carbon done clear
  B)
  Beryllium and Helium done clear
  C)
  Lithium and Sodium done clear
  D)
  Fluorine and Chlorine done clear
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• question_answer4)
  Ionization energies of atoms A and B are 400 and \[300\text{ }k\text{ }cal\text{ }mo{{l}^{-1}}\] respectively. The electron affinities of these atoms are 80.0 and \[85.0\text{ }k\text{ }cal\,mo{{l}^{-1}}\] respectively. Then which is the correct statement regarding electronegativity\[\chi \]?
  A)
  \[{{\chi }_{A}}<{{\chi }_{B}}\]                                 done clear
  B)
  \[{{\chi }_{A}}>{{\chi }_{B}}\] done clear
  C)
  \[{{\chi }_{A}}={{\chi }_{B}}\]                     done clear
  D)
  none of these done clear
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• question_answer5)
  The set of three elements having successive atomic numbers and having the ionization energies of 2372, 520 and \[890\text{ }kJ\] per mol is
  A)
  H, He, Li           done clear
  B)
  He, Li, Be done clear
  C)
  Li, Be, B           done clear
  D)
  B, C, N done clear
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• question_answer6)
  Similarity in chemical properties of the atoms of elements in a group of the Periodic table is most closely related to:
  A)
  atomic numbers done clear
  B)
  atomic masses done clear
  C)
  number of principal energy levels done clear
  D)
  number of valence electrons done clear
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• question_answer7)
  In the long form of the periodic table, the valence shell electronic configuration of \[5{{s}^{2}}5{{p}^{4}}\] corresponds to the element present in:
  A)
  Group 16 and period 6 done clear
  B)
  Group 17 and period 6 done clear
  C)
  Group 16 and period 5 done clear
  D)
  Group 17 and period 5 done clear
  View Solution play_arrow

• question_answer8)
  Consider the following ionization enthalpies of two elements 'A' and 'B'.

  	Elements 1st	Lionization 2nd	Enthalpy (KJ/mol)
  A	899	1757	14847
  B	737	1450	7731

  Which of the following statements is correct?
  A)
  Both 'A' and 'B' belong to group-1 where 'B' comes below 'A'. done clear
  B)
  Both 'A' and 'B' belong to group-1 where 'A' comes below 'B. done clear
  C)
  Both 'A' and 'B' belong to group-2 where 'B' comes below 'A'. done clear
  D)
  Both 'A' and 'B' belong to group-2 where 'A' comes below 'B'. done clear
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• question_answer9)
  Sum of first three ionization energies of Al is \[53.0\text{ }eV\text{ }ato{{m}^{-1}}\] and the sum of first two ionization energies of Na is \[52.2\text{ }eV\text{ }ato{{m}^{-1}}.\] Out of Al(III) and Na(II)              
  A)
  Na (II) is more stable than Al (III) done clear
  B)
  Al (III) is more stable than Na (II) done clear
  C)
  Both are equally stable done clear
  D)
  Both are equally unstable done clear
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• question_answer10)
  Which pair of elements belongs to same group?
  A)
  Elements with atomic no. 17 and 38 done clear
  B)
  Elements with atomic no. 20 and 40 done clear
  C)
  Elements with atomic no. 17 and 53 done clear
  D)
  Elements with atomic no. 11 and 33 done clear
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• question_answer11)
  In a given energy level, the order of penetration effect of different orbitals is
  A)
  \[f<d<p<s\]    done clear
  B)
  \[s=p=d=f\] done clear
  C)
  \[s<p<d<f\]     done clear
  D)
  \[p>s>d>f\] done clear
  View Solution play_arrow

• question_answer12)
  Consider the following changes:

  (1) \[M\left( s \right)\xrightarrow{{}}M\left( g \right)\]

  (2) \[M(s)\xrightarrow{{}}{{M}^{2+}}(g)+2{{e}^{-}}\]

  (3) \[M(g)\xrightarrow{{}}{{M}^{+}}(g)+{{e}^{-}}\]

  (4) \[{{M}^{+}}(g)\xrightarrow{{}}{{M}^{2+}}(g)+{{e}^{-}}\]

  (5) \[M\left( g \right)\xrightarrow{{}}{{M}^{2+}}\left( g \right)+2{{e}^{-}}\]

  The second ionization energy of M could be calculated from the energy values associated with:

  A)
  \[1+3+4\]                     done clear
  B)
  \[~2-1+3\] done clear
  C)
  \[1+5\]                          done clear
  D)
  \[5-3\] done clear
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• question_answer13)
  The correct order of decreasing electronegativity values among the elements I-beryllium, II-oxygen, III-nitrogen and IV-magnesium is
  A)
  \[II>III>I>IV\]   done clear
  B)
  \[III>IV>II>I\] done clear
  C)
  \[I>II>III>IV\]               done clear
  D)
  \[I>II>IV>III\] done clear
  View Solution play_arrow

• question_answer14)
  What is the order of ionisation energies of the coinage metal
  A)
  \[Cu>Ag<Au\]  done clear
  B)
  \[Cu>Ag>Au\] done clear
  C)
  \[Cu<Ag<Au\]               done clear
  D)
  \[Au>Ag<Cu\] done clear
  View Solution play_arrow

• question_answer15)
  First three ionisation energies (in kJ/mol) of three representative elements are given below:

  Element	\[I{{E}_{1}}\]	\[I{{E}_{2}}\]	\[I{{E}_{3}}\]
  P	495.8	4562	6910
  Q	737.7	1451	7733
  R	577.5	1817	2745

  Then incorrect option is:
  A)
  Q: Alkaline earth metal done clear
  B)
  P: Alkali metals done clear
  C)
  R: s-block element done clear
  D)
  They belong to same period done clear
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• question_answer16)
  What is the correct order of electronegativity?
  A)
  \[{{M}^{-}}<{{M}^{2-}}<\text{ }{{M}^{3-}}<{{M}^{4-}}\] done clear
  B)
  \[{{M}^{-}}>{{M}^{2}}^{-}>{{M}^{3}}^{-}>{{M}^{4}}^{-}\] done clear
  C)
  \[{{M}^{-}}<{{M}^{2-}}>{{M}^{3-}}<{{M}^{4-}}\] done clear
  D)
  \[{{M}^{4-}}<{{M}^{2-}}<{{M}^{3-}}<{{M}^{-}}\] done clear
  View Solution play_arrow

• question_answer17)
  The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. Its reason is:
  A)
  Both are found together in nature done clear
  B)
  Both have nearly the same size done clear
  C)
  Both have similar electronic configuration done clear
  D)
  The ratio of their charge and size (i.e. charge density) is nearly the same done clear
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• question_answer18)
  Which of the following sequence correctly represents the decreasing acidic nature of oxides?
  A)
  \[L{{i}_{2}}O>BeO>{{B}_{2}}{{O}_{3}}>C{{O}_{2}}>{{N}_{2}}{{O}_{3}}\] done clear
  B)
  \[{{N}_{2}}{{O}_{3}}>C{{O}_{2}}>{{B}_{2}}{{O}_{3}}>BeO>L{{i}_{2}}O\] done clear
  C)
  \[C{{O}_{2}}>{{N}_{2}}{{O}_{3}}>{{B}_{2}}{{O}_{3}}>BeO>L{{i}_{2}}O\] done clear
  D)
  \[{{B}_{2}}{{O}_{3}}>C{{O}_{2}}>{{N}_{2}}{{O}_{3}}>L{{i}_{2}}O>BeO\] done clear
  View Solution play_arrow

• question_answer19)
  Correct order of first IP among following elements Be, B, C, N, O is
  A)
  \[B<Be<C<O<N\] done clear
  B)
  \[B<Be<C<N<O\] done clear
  C)
  \[Be<B<C<N<O\] done clear
  D)
  \[Be<B<C<O<N\] done clear
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• question_answer20)
  In which of the following process highest energy is absorbed?
  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_answer21)
  The correct order of acidic strength:
  A)
  \[C{{l}_{2}}{{O}_{7}}>S{{O}_{2}}>{{P}_{4}}{{O}_{10}}\] done clear
  B)
  \[{{K}_{2}}O>CaO>MgO\] done clear
  C)
  \[C{{O}_{2}}>{{N}_{2}}{{O}_{5}}>S{{O}_{3}}\] done clear
  D)
  \[N{{a}_{2}}O>MgO>A{{l}_{2}}{{O}_{3}}\] done clear
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• question_answer22)
  An element of atomic weight 40 has 2, 8, 8, 2 as the electronic configuration. Which one of the following statements regarding this element is not correct?
  A)
  it belongs to II group of the periodic table done clear
  B)
  it has 20 neutrons done clear
  C)
  the formula of its oxide is \[M{{O}_{2}}\] done clear
  D)
  it belongs to 4th period of the periodic table done clear
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• question_answer23)
  Which of the following series correctly represents relations between the elements from X to Y?

  \[X\to Y\]

   
  A)
  \[{}_{3}Li\to {}_{19}K\] Ionization enthalpy increases done clear
  B)
  \[{}_{9}F\to {}_{35}Br\] Electron gain enthalpy (negative sign) increases done clear
  C)
  \[{}_{6}C\to {}_{32}Ge\] Atomic radii increases done clear
  D)
  \[~{}_{18}Ar\to {}_{54}Xe\] Noble character increases done clear
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• question_answer24)
  Which of the following arrangements represents the increasing order (smallest to largest) of ionic radii of the given species\[{{O}^{2-}},{{S}^{2-}},{{N}^{3-}},{{P}^{3-}}\]?
  A)
  \[{{O}^{2-}}<{{N}^{3-}}<{{S}^{2-}}<{{P}^{3-}}\] done clear
  B)
  \[{{O}^{2-}}<{{P}^{3-}}<{{N}^{3-}}<{{S}^{2-}}\] done clear
  C)
  \[{{N}^{3}}<{{O}^{2-}}<{{P}^{3-}}<{{S}^{2-}}\] done clear
  D)
  \[{{N}^{3-}}<{{S}^{2-}}<{{O}^{2-}}<{{P}^{3-}}\] done clear
  View Solution play_arrow

• question_answer25)
  Which one of the following has largest ionic radius?
  A)
  \[L{{i}^{+}}\]             done clear
  B)
  \[O_{2}^{2-}\] done clear
  C)
  \[{{B}^{3+}}\]                                    done clear
  D)
  \[~{{F}^{-}}\] done clear
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• question_answer26)
  Elements X, Y and Z have atomic numbers 19, 37 and 55 respectively. Which of the following statements is true about them?
  A)
  Their ionization potential would increase with increasing atomic number done clear
  B)
  'Y' would have an ionisation potential between those of 'X' and 'Z' done clear
  C)
  'Z' would have the highest ionization potential done clear
  D)
  'Y' would have the highest ionization potential. done clear
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• question_answer27)
  An element X occurs in short period having configuration \[n{{s}^{2}}n{{p}^{1}}\]. The formula and nature of its oxide is
  A)
  \[X{{O}_{3}}\], basic                done clear
  B)
  \[X{{O}_{3}}\] acidic done clear
  C)
  \[{{X}_{2}}{{O}_{3}},\] amphoteric done clear
  D)
  \[{{X}_{2}}{{O}_{3}}\]basic done clear
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• question_answer28)
  The decreasing order of the ionization potential of the following elements is
  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_answer29)
  The incorrect statement among the following is
  A)
  the first ionization potential of Al is less than the first ionization potential of Mg done clear
  B)
  the second ionization potential of Mg is greater than the second ionization potential of Na done clear
  C)
  the first ionization potential of Na is less than the first ionization potential of Mg done clear
  D)
  the third ionization potential of Mg is greater than the third ionization potential of Al. done clear
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• question_answer30)
  The screening effect of inner electrons of the nucleus causes
  A)
  decrease in the ionization energy done clear
  B)
  increase in the ionization energy done clear
  C)
  no effect on the ionization energy done clear
  D)
  increases the attraction of the nucleus for the electrons done clear
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• question_answer31)
  The order of increasing sizes of atomic radii among the elements O, S, Se and As is:
  A)
  \[As<S<O<Se\] done clear
  B)
  \[Se<S<As<O\] done clear
  C)
  \[O<S<As<Se\]            done clear
  D)
  \[O<S<Se<As\] done clear
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• question_answer32)
  Which is the correct order of second ionization potential of \[C,\text{ }N,\text{ O}\] and F in the following?
  A)
  \[O>N>F>C\]    done clear
  B)
  \[O>F>N>C\] done clear
  C)
  \[F>O>N>C\]    done clear
  D)
  \[C>N>O>F\] done clear
  View Solution play_arrow

• question_answer33)
  The first \[({{\Delta }_{i}}{{H}_{1}})\] and second \[({{\Delta }_{i}}{{H}_{2}})\] ionization enthalpies (in \[kJ\text{ }mo{{l}^{-1}}\]) and the electron gain enthalpy \[({{\Delta }_{eg}}H)\] (in \[kg\,\,mo{{l}^{-1}}\]) of the elements I, II, III, IV and V are given below.

  Element	\[{{\Delta }_{i}}{{H}_{1}}\]	\[{{\Delta }_{i}}{{H}_{2}}\]	\[{{\Delta }_{eg}}H\]
  I	520	7300	\[-\,60\]
  II	419	3051	\[-\,48\]
  III	1681	3374	\[-\,328\]
  IV	1008	1846	\[-\,295\]
  V	2372	5251	+48

  The most reactive metal and the least reactive non-metal of these are respectively
  A)
  I and V              done clear
  B)
  V and II done clear
  C)
  II and V     done clear
  D)
  IV and V done clear
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• question_answer34)
  Aqueous solutions of two compounds \[{{M}_{1}}-O-H\] and \[{{M}_{2}}-O-H\] are prepared in two different beakers. If, the electronegativity of \[{{M}_{1}}=3.4,\]\[{{M}_{2}}=1.2,\,\,O=3.5\] and \[H=2.1\] then the nature of two solutions will be respectively:
  A)
  acidic, basic    done clear
  B)
  acidic, acidic done clear
  C)
  basic, acidic                   done clear
  D)
  basic, basic done clear
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• question_answer35)
  An element having electronic configuration \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}4{{s}^{1}}\] forms
  A)
  Acidic oxide      done clear
  B)
  Basic oxide done clear
  C)
  Amphoteric oxide            done clear
  D)
  Neutral oxide done clear
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• question_answer36)
  The van der Waal and covalent radii of fluorine atom respectively from the following figure are.
  A)
  219 pm, 72 pm              done clear
  B)
  75 pm, 72 pm done clear
  C)
  147 pm, 72 pm   done clear
  D)
  147 pm, 144 pm done clear
  View Solution play_arrow

• question_answer37)
  Consider the following four elements, which are represented according to long form of periodic table. Here W, Y and Z are left, up and right elements with respect to the element 'X' and 'X' belongs to 16th group and 3rd period. Then according to given information the incorrect statement regarding given elements is:
  A)
  Maximum electronegativity: Y done clear
  B)
  Maximum catenation property: X done clear
  C)
  Maximum electron affinity: Z done clear
  D)
  Y exhibits variable covalency done clear
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• question_answer38)
  The electron affinity of chlorine is 3.7 eV. 1 g of chlorine is completely converted to \[C{{l}^{-}}\]ion in a gaseous state.\[\left( 1\text{ }eV=23.06\,Kcal\text{ }mo{{l}^{-1}} \right)\]. Energy released in the process is
  A)
  4.8 kcal             done clear
  B)
  7.2 kcal done clear
  C)
  8.2 kcal             done clear
  D)
  2.4 kcal done clear
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• question_answer39)
  In which of the following arrangements, the sequence is not strictly according to the property written against it?
  A)
  \[C{{O}_{2}}<Si{{O}_{2}}<Sn{{O}_{2}}<Pb{{O}_{2}}\]: increasing oxidising power done clear
  B)
  \[N{{H}_{3}}<P{{H}_{3}}<As{{H}_{3}}<Sb{{H}_{3}}:\] increasing basic strength done clear
  C)
  \[HF<HCl<HBr<HI:\] increasing acid strength done clear
  D)
  \[B<C<O<N:\] increasing first ionisation enthalpy. done clear
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• question_answer40)
  Which among the following elements has the highest first ionization enthalpy?
  A)
  Nitrogen     done clear
  B)
  Boron done clear
  C)
  Carbon                          done clear
  D)
  Oxygen done clear
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• question_answer41)
  Which of the following is not the correct order for the stated property?
  A)
  \[Ba>Sr>\]Mg; atomic radius done clear
  B)
  \[F>O>N:\] first ionization enthalpy done clear
  C)
  \[Cl>F>I;\] electron affinity done clear
  D)
  \[O>Se>Te;\] electronegativity done clear
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• question_answer42)
  The increasing order of electron affinity of N, P and As is               
  A)
  N<P<As                       done clear
  B)
  As <P<N done clear
  C)
  As<N<P           done clear
  D)
  As<N>P done clear
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• question_answer43)
  Which of the following ionisation energy values for calcium show a sudden increase?
  A)
  Third        done clear
  B)
  Second done clear
  C)
  First                              done clear
  D)
  Fourth done clear
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• question_answer44)
  The electronegativity follows the order
  A)
  \[F>O>Cl>Br\]   done clear
  B)
  \[~F>Cl>Br>O\] done clear
  C)
  \[~O>F>Cl>Br\]           done clear
  D)
  \[~Cl>F>O>Br\] done clear
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• question_answer45)
  The first ionisation potential of aluminium is smaller than that of magnesium because
  A)
  Atomic size of Al > Atomic size of Mg. done clear
  B)
  Atomic size of Al < Atomic size of Mg. done clear
  C)
  Al has one electron in p - orbital done clear
  D)
  None of these done clear
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• question_answer46)
  Which one of the following statements is incorrect in relation to ionisation enthalpy?
  A)
  Ionisation enthalpy increases for each successive electron. done clear
  B)
  The greatest increase in ionisation enthalpy is experienced on removal of electron from core noble gas configuration. done clear
  C)
  End of valence electrons is marked by a big jump in ionisation enthalpy. done clear
  D)
  Removal of electron from orbitals bearing lower n value is easier than from orbital having higher n value. done clear
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• question_answer47)
  Highest electron affinity is shown by
  A)
  \[{{O}^{-}}\]    done clear
  B)
  \[{{F}^{-}}\]    done clear
  C)
  \[C{{l}_{2}}\]                           done clear
  D)
  \[~{{F}_{2}}\] done clear
  View Solution play_arrow

• question_answer48)
  Which of the following order is wrong?
  A)
  \[N{{H}_{3}}<P{{H}_{3}}<As{{H}_{3}}-Acidic\] done clear
  B)
  \[Li<Be<B<C-I{{E}_{1}}\] done clear
  C)
  \[A{{l}_{2}}{{O}_{3}}<MgO<N{{a}_{2}}O<{{K}_{2}}O-Basic\] done clear
  D)
  \[L{{i}^{+}}<N{{a}^{+}}<{{K}^{+}}<C{{s}^{+}}-\]Ionic radius done clear
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• question_answer49)
  The electronic configuration of an element is. The atomic number and the group number of the element 'X' which is just below the above element in the periodic table are respectively         
  A)
  23 and 5            done clear
  B)
  23 and 15 done clear
  C)
  33 and 15    done clear
  D)
  33 and 5 done clear
  View Solution play_arrow

• question_answer50)
  Consider the following information about element P and Q: 

  	Period number	Group number
  P	2	15
  Q	3	2

   
  A)
  QP                    done clear
  B)
  \[{{Q}_{2}}{{P}_{3}}\] done clear
  C)
  \[{{Q}_{3}}{{P}_{2}}\] done clear
  D)
  \[{{Q}_{2}}P\] done clear
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• question_answer51)
  Which one of the following statements is incorrect?
  A)
  Greater the nuclear charge, greater is the electron affinity done clear
  B)
  Nitrogen has zero electron affinity done clear
  C)
  Electron affinity decreases from fluorine to iodine in 17th group done clear
  D)
  Chlorine has highest electron affinity done clear
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• question_answer52)
  Which of the following statements is wrong?
  A)
  van der Waal's radius of iodine is more than its covalent radius done clear
  B)
  All isoelectronic ions belong to same period of the periodic table done clear
  C)
  \[I.E{{.}_{1}}\]of N is higher than that of O while\[I.E{{.}_{2}}\] of O is higher than that of N done clear
  D)
  The electron gain enthalpy of N is almost zero while that of P is \[74.3\text{ }kJ\text{ }mo{{l}^{-1}}\] done clear
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• question_answer53)
  Electron affinity is positive for
  A)
  \[O(g)+{{e}^{-}}\to {{O}^{-}}(g)\] done clear
  B)
  \[S(g)+{{e}^{-}}\to {{S}^{-}}(g)\] done clear
  C)
  \[{{O}^{+}}(g)+{{e}^{~}}^{-}\to O(g)\] done clear
  D)
  \[{{O}^{-}}(g)+{{e}^{-}}\to {{O}^{2-}}(g)\] done clear
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• question_answer54)
  Which one of the following ionic species has the greatest proton affinity to form stable compound?
  A)
  \[C{{l}^{-}}\]                          done clear
  B)
  \[{{F}^{-}}~\] done clear
  C)
  \[~{{I}^{-}}\]                          done clear
  D)
  \[~B{{r}^{-}}\] done clear
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• question_answer55)
  Which property decreases from left to right across the periodic table and increases from top to bottom?

  (i)  Atomic radius

  (ii) Electronegativity.

  (iii) Ionisation energy

  (iv) Metallic character

  A)
  (i) only              done clear
  B)
  (i), (ii) and (iii) done clear
  C)
  (i), (iii) and (iv)               done clear
  D)
  (i) and (iv) done clear
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• question_answer56)
  The basic character of \[MgO,\text{ }BaO,\text{ }N{{a}_{2}}O\] and \[FeO\]follow the order
  A)
  \[MgO<FeO<BaO<N{{a}_{2}}O\] done clear
  B)
  \[FeO<MgO<N{{a}_{2}}O<BaO\] done clear
  C)
  \[FeO<MgO<BaO<N{{a}_{2}}O\] done clear
  D)
  \[N{{a}_{2}}O<MgO<FeO<BaO\] done clear
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• question_answer57)
  If the ionization enthalpy and electron gain enthalpy of an element are 275 and\[86\text{ }kcal\text{ }mo{{l}^{-1}}\] respectively, then the electronegativity of the element on the Pauling scale is:
  A)
  2.8        done clear
  B)
  0.0     done clear
  C)
  4.0                    done clear
  D)
  2.6 done clear
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• question_answer58)
  Which transition involves maximum amount of energy?
  A)
  \[{{M}^{-}}\left( g \right)\xrightarrow{{}}M\left( g \right)+{{e}^{-}}\] done clear
  B)
  \[{{M}^{-}}\left( g \right)\xrightarrow{{}}{{M}^{+}}\left( g \right)+2{{e}^{-}}\] done clear
  C)
  \[{{M}^{+}}\left( g \right)\xrightarrow{{}}{{M}^{2+}}\left( g \right)+{{e}^{-}}\] done clear
  D)
  \[{{M}^{2+}}\left( g \right)\xrightarrow{{}}{{M}^{3+}}\left( g \right)+{{e}^{-}}\] done clear
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• question_answer59)
  Which ionisation potential (IP) in the following equations involves the greatest amount of energy?
  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
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• question_answer60)

  Consider the following ionisation reactions:

  I.E.\[\left( kJ\text{ }mo{{l}^{-1}} \right)\]                  I.E. \[\left( kJ\text{ }mo{{l}^{-1}} \right)\]

  \[A(g)\to {{A}^{+}}(g)+{{e}^{-}},\,\,{{A}_{1}}\,\,A(g)~\to {{A}^{+}}(g)+{{e}^{-}},\,\,{{A}_{1}}\]

  \[{{B}^{+}}(g)\to {{B}^{2+}}(g)+{{e}^{-}},\,\,{{B}_{2}}C(g)\to {{C}^{+}}(g)+{{e}^{-}},\,\,{{C}_{1}}\]

  \[{{C}^{+}}(g)\to {{C}^{2+}}(g)+{{e}^{-}},\,\,{{C}_{1}}\,{{C}^{2+}}(g)\to {{C}^{3+}}(g)+{{e}^{-}},\,\,{{C}_{3}}\]

  If monovalent positive ion of A, divalent positive ion of B and trivalent positive ion of C have zero electron. Then incorrect order of corresponding I.E. is:
  A)
  \[{{C}_{3}}>{{B}_{2}}>{{A}_{1}}\]              done clear
  B)
  \[{{B}_{1}}>{{A}_{1}}>{{C}_{1}}\] done clear
  C)
  \[{{C}_{3}}>{{C}_{2}}>{{B}_{2}}\]              done clear
  D)
  \[{{B}_{2}}>{{C}_{3}}>{{A}_{1}}\] done clear
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