Question

The frequency of light emitted for the transition n = 4 to n = 2 of the He⁺ is equal to the transition in H atom corresponding to which of the following ?
(a) n = 2 to n = 1
(b) n = 3 to n = 2
(c) n = 4 to n = 3
(d) n = 3 to n = 1

Answer 1

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