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If the radius of the first Bohr orbit of...

If the radius of the first Bohr orbit of H atom is `0.5Å`, the radius of third orbit will be

A

`45 Å`

B

`4.5 Å`

C

`1.5 Å`

D

`0.166 Å`

Text Solution

Verified by Experts

The correct Answer is:
B
`r_(n)=r_(1)n^(2)" ":. r_(3)=0.5xx3^(2)=4.5 Å`
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