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When hydrogen atom is in its first excit...

When hydrogen atom is in its first excited level, its radius is

A

same

B

half

C

twice

D

4 times

Text Solution

Verified by Experts

The correct Answer is:
D
For first excited level, `n=2`
`:. r_(n)=r_(1)n^(2)`
`:. r_(2)=4r_(1)=4` times
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