Which of these can absorb visible light ?

[S c {(H_{2} O)}_{6}] {C l}_{3}

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[T i {(e n)}_{3}] {(S o_{4})}_{2}

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[Z n {({N H}_{3})}_{6}] {S O}_{4}

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[C r {({N H}_{3})}_{6}] {C l}_{3}

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Solution

The correct option is C $[C r {({N H}_{3})}_{6}] {C l}_{3}$
The correct answer is $d$ .
Because of only those transition metal complexes are expected to absorb visible light, in which $d$ -sub-shell is incomplete. Here it is Cr which has unpaired electrons.

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Similar questions

Which of the following complex ions is expected to absorb visible light?

(At number Zn = 30, Sc = 21, Ti = 22, Cr = 24)

C r

[C r (N H_{3})_{6}]

C l_{3}

[C r {(N H_{3})}_{6}] C l_{3}

[C r (N H_{3})_{6}] C l_{3}

[C r (N H_{3})_{6}] C l_{3}

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