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Positive Rays and Neutrons

The maximum n...

Question

The maximum number of photons emitted by an H-atom,if atom is excited to states with principal quantum number four is

A

4

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B

6

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C

2

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D

1

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Solution

The correct option is B $6$
Maximum number of photons ejected $= \frac{(n - L) (n - L + 1)}{2}$
$= \frac{(4 - 1) (4 - 1 + 1)}{2}$
$= 6$

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