engineering physics MCQ #604

The energy required to remove an electron from the 3rd orbit of hydrogen is

engineering physics MCQ #604

  1. Question 1

    Q1. The energy required to remove an electron from the 3rd orbit of hydrogen is

    • A) 1.51 eV
    • B) 3.4 eV
    • C) 0.85 eV
    • D) 13.6 eV

    Answer: 1.51 eV

    Explanation: Energy required = 0 - E3 = 0 - (-1.51) = 1.51 eV.