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Bohr's radius for the H-atom (n =1) is ...

Bohr's radius for the H-atom (n =1) is approximately 0.53 Ã…. The radius of the first excited state (n=2) is :

A

0.13 Å

B

1.06 Å

C

4.77 Å

D

2.12 Å

Text Solution

Verified by Experts

The correct Answer is:
D
`I^(st)` excited state means n = 2
`r=r_(0)xx2^(2)=0.53xx4=2.12Å`.
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