engineering chemistry MCQ #988

The radius of the nth orbit is given by r = n²a₀. If a₀ = 0.53 Å, what is the radius of the 2nd orbit?

engineering chemistry MCQ #988

  1. Question 1

    Q1. The radius of the nth orbit is given by r = n²a₀. If a₀ = 0.53 Å, what is the radius of the 2nd orbit?

    • A) 0.53 Å
    • B) 1.06 Å
    • C) 2.12 Å
    • D) 4.24 Å

    Answer: 2.12 Å

    Explanation: Using r = n²a₀, for n = 2, r = 2² * 0.53 = 4 * 0.53 = 2.12 Å.