The correct order of `I.E_(2)` among the following
The correct order of `I.E_(2)` among the following
A. `Cu gt Zn`
B. `H gt Li`
C. `Na gt Mg`
D. `B gt C`
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Correct Answer - A::C::D
`Cu=[Ar]3d^(10)4s^(1)overset(I.E._(1))rarr[Ar]3d^(10)`
`Zn=[Ar]3d^(10)4s^(2)overset(I.E._(1))rarr[Ar]3d^(10)4s^(1)`
`therefore CugtZn`
`Na=[Ne]3s^(1)overset(I.E._(1))rarr[Ne]`
`Mg = [Ne]3s^(2)overset(I.E._(1))rarr[Ne]3s^(1)`
`Na gt Mg`
`B=1s^(2)2s^(2)2p^(1)overset(I.E._(1))rarr1s^(2)2s^(2)`
`C=1s^(2)2s^(2)2p^(2)overset(I.E._(1))rarr1s^(2)2s^(2)2p^(1)`
`therefore B gt C`
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