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question_answer1)
Which of these dose not reflect the periodicity of the elements
A)
Bonding behaviour done
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B)
Electronegativity done
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C)
Ionization energy done
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D)
Neutron/proton ratio done
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question_answer2)
Elements of atomic number 6 is placed in
A)
IV group done
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B)
IV period done
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C)
VI group done
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D)
III group done
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question_answer3)
An element has electronic configuration \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{4}}\]. Predict their period, group and block
A)
Period = 3rd, block = p, group = 16 done
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B)
Period = 5th, block = s, group = 1 done
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C)
Period = 3rd, block = p, group = 10 done
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D)
Period = 4th, block = d, group = 12 done
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question_answer4)
The element having the electronic configuration \[1{{s}^{2}},\] \[2{{s}^{2}}\,2{{p}^{6}},\,3{{s}^{2}}\,3{{p}^{1}}\] is
A)
A transition element done
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B)
A representative element done
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C)
An inert gas done
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D)
An innertransition element done
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question_answer5)
The element with atomic number 55 belongs to
A)
s-block done
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B)
p-block done
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C)
d-block done
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D)
f-block done
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question_answer6)
In which of the following groups all the three members are of the alkaline earth metals family
A)
\[Al,\,Sr,\,Ti\] done
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B)
\[Li,\,Na,\,K\] done
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C)
\[Mg,\,Ba,\,Ca\] done
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D)
\[Rb,\,Cs,\,Fr\] done
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question_answer7)
Which of the properties remains unchanged on descending a group in the periodic table
A)
Atomic size done
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B)
Density done
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C)
Valence electrons done
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D)
Metallic character done
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question_answer8)
Which of the following has the smallest size
A)
\[N{{a}^{+}}\] done
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B)
\[M{{g}^{+2}}\] done
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C)
\[C{{l}^{-}}\] done
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D)
\[{{F}^{-}}\] done
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question_answer9)
The lanthanide contraction is responsible for the fact that
A)
Zr and Y have about the same radius done
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B)
Zr and Nb have similar oxidation state done
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C)
Zr and Hf have about the same radius done
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D)
Zr and Zn have the same oxidation state done
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question_answer10)
Radius of the isoelectronic species
A)
Increases with the increase of nuclear charge done
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B)
Decreases with the increase of nuclear charge done
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C)
Is the same for all done
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D)
First increases and then decreases done
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question_answer11)
Increasing order of atomic radii is
A)
\[M{{g}^{2+}}<N{{a}^{+}}<Ne<{{F}^{-}}<{{O}^{2-}}\] done
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B)
\[N{{a}^{+}}<M{{g}^{++}}<Ne<{{F}^{-}}<{{O}^{2-}}\] done
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C)
\[{{O}^{2-}}<{{F}^{-}}<Ne<N{{a}^{+}}<M{{g}^{2+}}\] done
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D)
\[Ne<{{O}^{2-}}<{{F}^{-}}<N{{a}^{+}}<M{{g}^{2+}}\] done
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question_answer12)
The first ionisation energies of alkaline earth metals are higher than those of the alkali metals. This is because
A)
There is increase in the nuclear charge of the alkaline earth metals done
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B)
There is a decrease in the nuclear charge of the alkaline earth metals done
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C)
There is no change in the nuclear charge done
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D)
None of the above done
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question_answer13)
Which ionisation potential \[\left( IP \right)\] in the following equations involves the greatest amount of energy
A)
\[Na\to N{{a}^{+}}+{{e}^{-}}\] done
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B)
\[{{K}^{+}}\to {{K}^{2+}}+{{e}^{-}}\] done
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C)
\[{{C}^{2+}}\to {{C}^{3+}}+{{e}^{-}}\] done
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D)
\[C{{a}^{+}}\to C{{a}^{2+}}+{{e}^{-}}\] done
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question_answer14)
The first ionisation energy of lithium will be
A)
Greater than \[Be\] done
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B)
Less than \[Be\] done
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C)
Equal to that of \[Na\] done
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D)
Equal to that of \[F\] done
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question_answer15)
Which has maximum first ionization potential
A)
C done
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B)
N done
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C)
B done
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D)
O done
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question_answer16)
The electron affinities of halogens are \[F=322\], \[Cl=349\], \[Br=324\], \[I=295kJ\,mo{{l}^{-1}}\]. The higher value for \[Cl\] as compared to that of \[F\] is due to
A)
Weaker electron-electron repulsion in \[Cl\] done
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B)
Higher atomic radius of \[F\] done
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C)
Smaller electronegativity of \[F\] done
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D)
More vacant P - subshell in \[Cl\] done
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question_answer17)
Which of the following properties show gradual decrease with increase in atomic number across a period in the periodic table
A)
Electron affinity done
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B)
Ionization potential done
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C)
Electronegativity done
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D)
Size of atom done
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question_answer18)
Keeping in view the periodic law and the periodic table suggest which of the following elements should have the maximum electronegative character
A)
P done
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B)
As done
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C)
Bi done
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D)
Sb done
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question_answer19)
With increasing atomic number in a certain period
A)
The chemical reactivity decreases done
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B)
The chemical reactivity increases done
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C)
The electropositive character increases done
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D)
The electronegative character increases done
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question_answer20)
Which of these have no unit
A)
Electronegativity done
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B)
Electron affinity done
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C)
Ionisation energy done
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D)
Excitation potential done
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question_answer21)
Acidity of pentoxides in VA group
A)
Decreases done
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B)
Increases done
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C)
Remains same done
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D)
None done
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question_answer22)
Pentavalency in phosphorus is more stable when compared to that of nitrogen even through they belong to same group is due to
A)
Reactivity of phosphorus done
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B)
Inert nature of nitrogen done
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C)
Dissimilar electronic configuration done
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D)
Larger size of phosphorus atom done
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question_answer23)
Oxidising action increases in halogen in the following order
A)
Cl < Br < I < F done
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B)
Cl < I < Br < F done
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C)
I < F < Cl < Br done
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D)
I < Br < Cl < F done
clear
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question_answer24)
An element X which occurs in the first short period has an outer electronic structure \[{{s}^{2}}{{p}^{1}}\]. What are the formula and acid-base character of its oxides
A)
\[X{{O}_{3}},\] basic done
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B)
\[{{X}_{2}}{{O}_{3}},\] basic done
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C)
\[{{X}_{2}}{{O}_{3}},\] amphoteric done
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D)
\[X{{O}_{2}},\] acidic done
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question_answer25)
Hydrogen by donating one electron forms \[{{H}^{+}}\]. In this property, it resembles with
A)
Transitional metals done
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B)
Alkaline earth metals done
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C)
Alkali metals done
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D)
Halogens done
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question_answer26)
The 6 properties of the elements are periodic function of their atomic numbers. The statement was given by
A)
N. Bohr done
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B)
J.W. Dobereiner done
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C)
D.I. Mendeleef done
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D)
H.G.J. Moseley done
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question_answer27)
Chemical property of Li and Mg similar because
A)
These belong to same group done
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B)
Both ionisation potential is same done
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C)
Shows diagonal relationship done
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D)
Both electron affinity is same done
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question_answer28)
Elements after atomic number 103 have been discovered till now. If an element with atomic number 106 were ever discovered which of the following electronic configuration will it possess
A)
\[[Rn]\,5{{f}^{14}}\,6{{d}^{4}}\,7{{s}^{2}}\] done
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B)
\[[Rn]\,5{{f}^{14}}\,6{{d}^{5}}7{{s}^{1}}\] done
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C)
\[[Rn]\,5{{f}^{14}}\,6{{d}^{6}}\,7{{s}^{0}}\] done
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D)
\[[Rn]\,5{{f}^{14}}\,6{{d}^{1}}\,7{{s}^{2}}\,7{{p}^{3}}\] done
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question_answer29)
In the modern periodic table, elements are arranged in
A)
Increasing mass done
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B)
Increasing volume done
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C)
Increasing atomic number done
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D)
Alphabetically done
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question_answer30)
\[Ce-58\] is a member of
A)
s-block elements done
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B)
p-block elements done
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C)
d-block elements done
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D)
f-block elements done
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question_answer31)
Which of the following doesnt decompose on heating
A)
\[MgC{{O}_{3}}\] done
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B)
\[N{{a}_{2}}C{{O}_{3}}\] done
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C)
\[L{{i}_{2}}C{{O}_{3}}\] done
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D)
\[Ca\,{{(HC{{O}_{3}})}_{2}}\] done
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question_answer32)
Which one of the following ions has the highest value of ionic radius
A)
\[{{O}^{2-}}\] done
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B)
\[{{B}^{3+}}\] done
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C)
\[L{{i}^{+}}\] done
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D)
\[{{F}^{-}}\] done
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question_answer33)
The unit representing atomic radii and ionic radii is
A)
nm done
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B)
cm done
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C)
Å done
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D)
m done
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question_answer34)
Arrange the following in increasing order of their atomic radius : \[Na,\,K,\,Mg,\,Rb\]
A)
Mg < K < Na < Rb done
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B)
Mg < Na < K < Rb done
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C)
Mg < Na < Rb < K done
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D)
Na < K < Rb < Mg done
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question_answer35)
Correct energy value order is
A)
\[ns\ np\ nd(n-1)f\] done
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B)
\[ns\ np(n-1)d\ (n-2)f\] done
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C)
\[ns\ np(n-1)d\ (n-1)f\] done
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D)
\[ns(n-1)d\ n(n-1)f\] done
clear
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question_answer36)
The ionization energy of nitrogen is more than that of oxygen because
A)
Nitrogen has half filled p-orbitals done
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B)
Nitrogen is left to the oxygen in the same period of the periodic table done
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C)
Nitrogen contains less number of electrons done
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D)
Nitrogen is less electronegative done
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question_answer37)
Which of the following elements has the lowest ionistion potential
A)
N done
clear
B)
O done
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C)
F done
clear
D)
Ne done
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question_answer38)
Ionisation energy in group I-A varies in the decreasing order as
A)
\[Li>Na>K>Cs\] done
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B)
\[Na>Li>K>Cs\] done
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C)
\[Li>Cs>K>Na\] done
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D)
\[K>Cs>Na>Li\] done
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question_answer39)
Which one of the following sets of ions represents the collection of isoelectronic species
A)
\[{{K}^{+}},C{{l}^{-}},M{{g}^{2+}},S{{c}^{3+}}\] done
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B)
\[N{{a}^{+}},C{{a}^{2+}},S{{c}^{3+}},{{F}^{-}}\] done
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C)
\[{{K}^{+}},C{{a}^{2+}},S{{c}^{3+}},C{{l}^{-}}\] done
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D)
\[N{{a}^{+}},M{{g}^{2+}},A{{l}^{3+}},Cl\] done
clear
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question_answer40)
The electron affinity values (in \[kJ\,mo{{l}^{-1}}\]) of three halogens \[X,\,Y\] and \[Z\] are respectively 349, 333 and 325. Then \[X,\,Y\] and \[Z\] are respectively
A)
\[{{F}_{2}},\,C{{l}_{2}}\] and \[B{{r}_{2}}\] done
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B)
\[C{{l}_{2}},\,{{F}_{2}}\] and \[B{{r}_{2}}\] done
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C)
\[C{{l}_{2}},\,B{{r}_{2}}\] and \[{{F}_{2}}\] done
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D)
\[B{{r}_{2}},\,C{{l}_{2}}\] and \[{{F}_{2}}\] done
clear
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