1.

Identity the correct increasing order of crystal field stabilisation energy value for the given complexes .A. `[Ir(nH_(3))_(6)]^(3+) lt [Rh(NH_(3))_(6)]^(3+) lt [Co(NH_(3))_(6)]^(3+)`B. `[Rh(NH_(3))_(6)]^(3+) lt [Co(NH_(3))_(6)]^(3+) lt[Ir(NH_(3))_(6)]^(3+)`C. `[Co(NH_(3))_(6)]^(3+) lt [Ir(NH_(3))_(6)]^(3+) lt [Rh(NH_(3))_(6)]^(3+)`D. `[Co(NH_(3))_(6)]^(3+) lt[Rh(NH_(3))_(6)]^(3+) lt [Ir(NH_(3))_(6)]^(3+)`

Answer» Correct Answer - D
The order of spitting of the transition metals belonging to different series is :
3d lt 4d lt 5d
Therefore , the order of CFSE is :
`[Co(NH_3)_6]^(3+)` lt `[Rh(NH_3)_6]^(3+)` lt `[Ir(NH_3)_6)^(3+)`.


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