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Q.

Statement I : The electronic configuration of Cr in the ground state is [Ar]4s13d5 Instead of [Ar]4s23d4Statement II : The average exchange energy associated with 4s13d5 configuration is less when compared to that of 4s23d4

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a

Both Statement I and Statement II are true

b

Statement I is true and Statement II is false

c

Statement I is false and Statement II is true

d

Both Statement I and Statement II are false

answer is B.

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Detailed Solution

Statement I : Cr(Z = 24)...[Ar]4s13d5, Statement I is correctStatement II : 4s13d5 has 15 exchange pairs where 4s23d4 has only 10 exchange pairs, Statement II is false
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Statement I : The electronic configuration of Cr in the ground state is [Ar]4s13d5 Instead of [Ar]4s23d4Statement II : The average exchange energy associated with 4s13d5 configuration is less when compared to that of 4s23d4