Consider the following statements:(A) $\mathrm{Cr}^{2+}$ is easier to oxidize than $\mathrm{V}^{2+}$ in the gas phase(B) $\mathrm{Cr}^{2+}$ (aq) is a more powerful reducing agent than $\mathrm{V}^{2+}$ (aq).(C) The rate of water exchange for $\mathrm{Cr}^{2+}$ (aq) is much faster than for $\mathrm{V}^{2+}$ (aq)The correct statements are
(a)A and B
(b)A and C
(c)B and C
(d)A, B and C
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
(A) false: V²⁺ has the lower third IE; (B) true: E°(Cr³⁺/Cr²⁺) = −0.41 V vs −0.26 V for V; (C) true: Jahn–Teller Cr²⁺(aq) exchanges water far faster than d³ V²⁺ — B and C (c).