Three electronic transitions at 14900, 22700 and $34400\ \mathrm{cm}^{-1}$ are observed in the absorption spectrum of $\left[\mathrm{CrF}_{6}\right]^{3-}$, The $\Delta_{0}$ value (in $\mathrm{cm}^{-1}$) and the corresponding transition are
(a)7800 and $^{4}A_{2g} \rightarrow {}^{4}T_{2g}$
(b)14900 and $^{4}A_{2g} \rightarrow {}^{4}T_{2g}$
(c)14900 and $^{4}T_{1g} \rightarrow {}^{4}T_{1g}(F)$
(d)7800 and $^{4}T_{2g} \rightarrow {}^{3}T_{1g}(F)$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
For d³ the lowest band ⁴A₂g → ⁴T₂g equals Δ₀ directly: 14,900 cm⁻¹.