engineering physics MCQ #500

The radius of the nth orbit of hydrogen atom is given by rn = n² * 0.53 Å. What is the radius of the 4th orbit?

engineering physics MCQ #500

  1. Question 1

    Q1. The radius of the nth orbit of hydrogen atom is given by rn = n² * 0.53 Å. What is the radius of the 4th orbit?

    • A) 8.48 Å
    • B) 4.24 Å
    • C) 2.12 Å
    • D) 1.06 Å

    Answer: 8.48 Å

    Explanation: Substitute n = 4 in the given formula to get r4 = 4² * 0.53 = 8.48 Å.