engineering physics MCQ #421

The radius of the first orbit of hydrogen atom is 0.053 nm. The radius of the 4th orbit is

engineering physics MCQ #421

  1. Question 1

    Q1. The radius of the first orbit of hydrogen atom is 0.053 nm. The radius of the 4th orbit is

    • A) 0.848 nm
    • B) 0.212 nm
    • C) 0.053 nm
    • D) 0.424 nm

    Answer: 0.848 nm

    Explanation: For n = 4, rn = 4² * 0.053 = 0.848 nm.