Crystal field stabilization energy for high spin `d^4` octahedral complex is

Options

A. `-0.6Delta_(0)`
B. `-1.8Delta_(0)`
C. `-1.6Delta_(0)+P`
D. `-1.2Delta_(0)`

Answer

A

Explanation

`d^(4)` octahedral complex has configuration `t_(2g)^(3)e_(g)^(1)`
CFSE = `(-0.4x+0.6y)Delta_(0)`
x = no. of electrons in `e_(g)`
y = no of electrons in `e_(g)`
`:.` CFSE = `[-0.4(3) + o .6(1)] Delta_(0)`
= `[-1.2+0.6]Delta_(0) = - 0.6 Delta_(0)`.