Identity the correct increasing order of crystal field stabilisation energy value for the given complexes .

Options

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

D

Explanation

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+)`.