Statement I: The number of paramagnetic species among and is 3. Statement II: is the correct order in terms of number of unpaired electron(s) present in the complexes. [2026]

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Solution

Q.
Given below are two statements:

Statement I: The number of paramagnetic species among ${[{CoF}_{6}]}^{3 -}, {[{TiF}_{6}]}^{3 -}, V_{2} O_{5}$ and ${[Fe {(CN)}_{6}]}^{3 -}$ is 3.

Statement II: $K_{4} [Fe {(CN)}_{6}] < K_{3} [Fe {(CN)}_{6}] < [Fe {(H_{2} O)}_{6}] {SO}_{4} \cdot H_{2} O < [Fe {(H_{2} O)}_{6}] {Cl}_{3}$

is the correct order in terms of number of unpaired electron(s) present in the complexes.

In the light of the above statements, choose the correct answer from the options given below: [2026]

1 Both Statement I and Statement II are false

2 Both Statement I and Statement II are true

3 Statement I is true but Statement II is false

4 Statement I is false but Statement II is true

Ans.
(2)

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