The $^{2}E_{g} \leftarrow {}^{4}A_{2g}$ transition in the electronic spectrum of $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$ occurs nearly at
(a)650 nm
(b)450 nm
(c)350 nm
(d)200 nm
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
The ²E_g ← ⁴A₂g band of Cr(III) ammines lies near 650 nm (a).