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The radius of the orbit of an electron i...

The radius of the orbit of an electron in a Hydrogen-like atom is `4.5 a_(0)`, where `a_(0)` is the Bohr radius. Its orbital angular momemtum is `(3h)/(2pi)`. It is given that `h` is Plank constant and `R` si Rydberg constant. The possible wavelength `(s)`, when the atom-de-excites. is (are):

A

2

B

3

C

4

D

5

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The correct Answer is:
A
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