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The ratio of speed of electron in the 3r...

The ratio of speed of electron in the 3rd orbit of `He^+`ion to the speed in the 3rd orbit of hydrogen atom will be

A

`1:1`

B

`1:2`

C

`4:1`

D

`2:1`

Text Solution

Verified by Experts

The correct Answer is:
D
`v=(2.19xx10^6m//sec)Z/nrArrvpropZ/n`
`v_1prop2/3,v_2prop1/3`
`(v_1)/(v_2)=2/1`
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