Low spin complex of d⁶ – cation in an octahedral field will have the following energy [${∆}_{\mathrm{o}}$ = crystal field splitting energy, p = pairing energy]

Low spin complex of d⁶ cation having Δ_0​> P.E
Configuration is t_2​g⁶e_g⁰ and 3 electron are paired in t_2g​​ orbital
= (- 0.4 ​t_2​g+0.6e_g) Δ₀+3P

= (- 0.4 ​$\times$6 +0.6 $\times$0) Δ₀+3P
= - 2.4 ​Δ_0​+3P