Chemistry Question from JEE Main 2023 · 10 April, Shift 1

Which of the following statements are correct?

(A) The $\mathrm{M}^{3+}/\mathrm{M}^{2+}$ reduction potential for iron is greater than manganese. (B) The higher oxidation states of first-row d-block elements get stabilized by oxide ion. (C) Aqueous solution of $\mathrm{Cr}^{2+}$ can liberate hydrogen from dilute acid. (D) Magnetic moment of $\mathrm{V}^{2+}$ is observed between $4.4\text{-}5.2\,\mathrm{BM}$.