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The ratio of radius of 4th orbit of hydr...

The ratio of radius of 4th orbit of hydrogen and 3rd orbit of `Li^(2+)` is

A

`256:9`

B

`9:16`

C

`16:3`

D

`32:9`

Text Solution

Verified by Experts

The correct Answer is:
C
`r_(n)=(0.059n^(2))/Z`
`r_(4)(H)=(0.059xx16)/1`
`r_(3)(Li^(2+))=(0.059xx9)/3, (r_(4)(H))/(r_(3)(Li^(2+)))=16/3`
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