The spin-only magnetic moment and the spectroscopic ground state term symbol of manganese center in $\left[\mathrm{MnF}_{6}\right]^{3-}$ ion respectively, are
(a)4.9 BM and $^{5}D$
(b)4.9 BM and $^{4}F$
(c)3.9 BM and $^{3}D$
(d)4.9 BM and $^{3}F$
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
[MnF₆]³⁻ is high-spin Mn(III) d⁴: four unpaired electrons, μ = √24 = 4.9 BM; ground term ⁵D.