Radius of the first excited state of Helium ion is given as: a0 radius of first stationary state of hydrogen atoms. (A) r = 2a0 (B) r = 4a0 (C) r = a0 (D) r = a0

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Question

Radius of the first excited state of Helium ion is given as: a0 radius of first stationary state of hydrogen atoms.

(A) r = 2a0
(B) r = 4a0
(C) r = a0
(D) r = a0

Prashant Kotian · Accepted Answer

Correct answer: A. rn = (0.529 Å) Z n2 or r2(He+) = a0 2 = 2a0

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