Question

Calculate CFSE values for the following system.

$d^5$ - high spin octahedral

• A. $0.0{\Delta }_0$
• B. $-2.0{\Delta }_0$
• C. $-2.4{\Delta }_0$
• D. $2.0{\Delta }_0$

Answer 1

The correct option is A $0.0{\Delta }_0$

Option (A) is correct.

In $d^5$- high spin octahedral, 3 electron is their in $t_{2g}$ and 2 electrons in $e_g$.

By applying formula,

$\Delta$ for octahedral complex = no. of electrons in $e_g$·(0.6)+ no. of electrons in $t_{2g}$(-0.4)

$=2\left(0.6\right)+3(-0.4)$

$=0.0$ ${\Delta }_o$