engineering chemistry MCQ #998

The ratio of the radii of the first three orbits is

engineering chemistry MCQ #998

  1. Question 1

    Q1. The ratio of the radii of the first three orbits is

    • A) 1 : 2 : 3
    • B) 1 : 4 : 9
    • C) 1 : 8 : 27
    • D) 1 : 3 : 5

    Answer: 1 : 4 : 9

    Explanation: Using r ∝ n², the ratio of radii is 1² : 2² : 3² = 1 : 4 : 9.