MDCAT Chemistry MCQ #954

Which statement correctly describes the effective nuclear charge (Z_eff) for an electron in a 3p orbital?

MDCAT Chemistry MCQ #954

  1. Question 1

    Q1. Which statement correctly describes the effective nuclear charge (Z_eff) for an electron in a 3p orbital?

    • A) Z_eff increases down a group
    • B) Z_eff is equal to the atomic number
    • C) Z_eff decreases across a period
    • D) Z_eff is always less than the actual nuclear charge

    Answer: Z_eff is always less than the actual nuclear charge

    Explanation: Shielding reduces the net nuclear attraction. Z_eff increases across a period but never equals the atomic number.