engineering physics MCQ #584

The radius of the first orbit in a hydrogen atom is 0.53 Å. What is the radius of the second orbit?

engineering physics MCQ #584

  1. Question 1

    Q1. The radius of the first orbit in a hydrogen atom is 0.53 Å. What is the radius of the second orbit?

    • A) 1.06 Å
    • B) 2.12 Å
    • C) 0.265 Å
    • D) 4.24 Å

    Answer: 2.12 Å

    Explanation: Use rn = n² * 0.53 Å, for n = 2, r2 = 4 * 0.53 = 2.12 Å.