engineering physics MCQ #529

The radius of the first orbit of hydrogen atom is r₁ = 0.53 Å. What is the radius of the second orbit?

engineering physics MCQ #529

  1. Question 1

    Q1. The radius of the first orbit of hydrogen atom is r₁ = 0.53 Å. What is the radius of the second orbit?

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

    Answer: 2.12 Å

    Explanation: r₂ = 2² r₁ = 4 x 0.53 = 2.12 Å.