MDCAT Chemistry MCQ #782

An element with atomic number 24 shows an unexpected electron configuration. What is its stable configuration?

MDCAT Chemistry MCQ #782

  1. Question 1

    Q1. An element with atomic number 24 shows an unexpected electron configuration. What is its stable configuration?

    • A) 3d⁴4s²
    • B) 3d⁵4s¹
    • C) 3d⁶4s⁰
    • D) 4d⁵4s¹

    Answer: 3d⁵4s¹

    Explanation: Chromium's half-filled 3d orbital (option B) is more stable than 3d⁴4s² (option A).