The tetrahedral ion [FeCl4]^- (Cl- weak-field) has which hybridisation and spin-only magnetic moment?

JEE Main levelSingle correct optionDifficulty 2 of 3cc184

The tetrahedral ion $[FeCl X_{4}] X^{-}$ ( $Cl X^{-}$ weak-field) has which hybridisation and spin-only magnetic moment?

Fe X^{3 +}

3 d^{5}

and the weak-field

Cl X^{-}

does not pair the electrons, so

n = 5

. Four

Cl X^{-}

use

4 s

and three

4 p

orbitals, i.e.

s p^{3}

μ = 5 \times 7 = 5.92

BM.