In the isoelectronic series, $\mathrm{VO}_{4}^{3-}, \mathrm{CrO}_{4}^{2-}$ and $\mathrm{MnO}_{4}^{-}$, all members have intense charge transfer (CT) transitions. The INCORRECT statement is
(a)CT transitions are attributed to excitations of electrons from ligand $(\sigma)$ to metal (e)
(b)$\mathrm{MnO}_{4}^{-}$ exhibits charge transfer at shortest wavelength among the three
(c)The wavelength of tjransitions increase in the order $\mathrm{VO}_{4}^{3-}<\mathrm{CrO}_{4}^{2-}<\mathrm{MnO}_{4}^{-}$
(d)The charge on metal nucleus increases in the order $\mathrm{VO}_{4}^{3-}<\mathrm{CrO}_{4}^{2-}<\mathrm{MnO}_{4}^{-}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
MnO₄⁻ (most oxidising metal, Mn(VII)) has its LMCT at the LONGEST wavelength (purple), so the statement that it absorbs at the shortest wavelength is incorrect (b).