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The radius of electron in the first exci...

The radius of electron in the first excited state of hydrogen atom is

A

`a_0`

B

`4a_0`

C

`2a_0`

D

`8a_0`

Text Solution

Verified by Experts

The correct Answer is:
B
`r prop n^2` (excited state n=2)
`r=4a^0`
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