If the radius of the first orbit of hydrogen atom is a0, then de Broglie's wavelength of electron in 3rd orbit is (A) 3r0 (B) a0 (C) 3 a0 (D) 6r0

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Question

If the radius of the first orbit of hydrogen atom is a0, then de Broglie's wavelength of electron in 3rd orbit is

(A) 3r0
(B) a0
(C) 3 a0
(D) 6r0

Prashant Kotian · Accepted Answer

r3 = 90 2r3 = 33 2 × 90 = 33 3 = 60

💡 Solution & Explanation