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Interhalogen Compounds - Chemical Properties

Which one of ...

Question

Which one of the following complexes is expected to have lowest $Δ_{o}$ values?

[C o (N H_{3})_{6}]^{3 +}

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[C o F_{6}]^{3 -}

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[R h (N H_{3})_{5}]^{3 +}

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[I r (N H_{3})_{6}]^{3 +}

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Solution

The correct option is D $[I r (N H_{3})_{6}]^{3 +}$
Due to weak effect by inner f-orbitals, here d- electron are more strongly bonded and smaller splitting happens.

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Similar questions

(Δ_{o})

[C o (N H_{3})_{6}]^{3 +}

[R h (N H_{3})_{6}]^{3 +}

[I r (N H_{3})_{6}]^{3 +}

Δ_{\circ}

{[C o {(N H_{3})}_{6}]}^{+ 3}

{[R h {(N H_{3})}_{6}]}^{+ 3}

{[I r {(N H_{3})}_{6}]}^{+ 3}

Δ_{o}

[C o (N H_{3})_{6}]^{3 +} a n d [R h (N H_{3})_{6}]^{3 +}

[C o F_{6}]^{3 -}

C r^{3 +}

[C r (C l)_{6}]^{3 -}, [C r (H_{2} O)_{6}]^{3 +}, [C r (N H_{3})_{6}]^{3 +}

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

(Δ_{o})

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