MDCAT Chemistry MCQ #799

What causes the anomalous stability of the Cr³⁺ ion in aqueous solution?

MDCAT Chemistry MCQ #799

  1. Question 1

    Q1. What causes the anomalous stability of the Cr³⁺ ion in aqueous solution?

    • A) Fully filled 3d subshell
    • B) Half-filled 3d subshell
    • C) Greater hydration energy
    • D) Higher lattice energy

    Answer: Half-filled 3d subshell

    Explanation: Cr³⁺ has a 3d³ configuration, not half-filled. Option A refers to Zn²⁺, not Cr³⁺.