MDCAT Chemistry MCQ #802

Which element shows an inversion in the first and second ionization energies due to subshell completion?

MDCAT Chemistry MCQ #802

  1. Question 1

    Q1. Which element shows an inversion in the first and second ionization energies due to subshell completion?

    • A) Lithium
    • B) Beryllium
    • C) Boron
    • D) Carbon

    Answer: Lithium

    Explanation: Li's second IE jumps after losing its 2s electron. Option B shows a drop, not inversion.