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Q.

The speed of the electron in a hydrogen atom in the n = 3 level is

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a

1.6 × 105 ms–1

b

3.7 × 105 ms–1

c

7.3 × 105 ms–1

d

6.2 × 105 ms–1

answer is C.

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Detailed Solution

We knows that velocity of an e– in the nth state
v=c137Zn=3×108137×13=7.3×105

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