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What will be the correct order for the w...

What will be the correct order for the wavelengths of absorption in the visible region for the following:
`[Ni(NO_(2))_(6)]^(4-), [Ni(NH_(3))_(6)]^(2+), [Ni(H_(2)O)_(6)]^(2+)` ?

A

`PgtQgtR`

B

`QgtPgtR`

C

`RgtQgtP`

D

`QgtRgtP`

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta_(0) implies NO_(2)^(-) gt NH_(3) gt H_(2)O`
`lambda_(abs) implies NO_(2)^(-) lt NH_(3) lt H_(2)O`
`lambda_(abs) implies P gt Q gt R`
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Statement-1: The correct order for the wave length of absorption in the visible region is : [Ni(NO_(2))_(6)]^(4-)lt[Ni(NH_(3))_(6)]^(2+)lt[Ni(H_(2)O)_(6)]^(2+) Statement-2: The stability of different complexes depends on the strength of the ligands field of the various ligands.

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