Compare [Co(NH3)6]^3+ (low spin) and [CoF6]^3- (high spin, F- weak-field). Which statements are correct?

Their hybridisations are d^2sp^3 and sp^3d^2 respectively

The spin-only moment of [CoF6]^3- is 4.90 BM

Their hybridisations are d^2sp^3 and sp^3d^2 respectively

The spin-only moment of [CoF6]^3- is 4.90 BM

[Co(NH3)6]^3+ is an outer-orbital complex

Both have the same number of unpaired electrons

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3cc203

Compare $[Co (NH X_{3}) X_{6}] X^{3 +}$ (low spin) and $[CoF X_{6}] X^{3 -}$ (high spin, $F X^{-}$ weak-field). Which statements are correct?

Both contain

Co X^{3 +}

(

d^{6}

). The ammine is

t_{2 g}^{6}

(

d^{2} s p^{3}

, inner orbital,

n = 0

). The fluoride is

t_{2 g}^{4} e_{g}^{2}

(

s p^{3} d^{2}

, outer orbital,

n = 4

μ = 24 = 4.90

BM). So A and B are true; C and D are false.