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In which of the following systems will t...

In which of the following systems will the radius of the first orbit `(n = 1)` be minimum ?

A

Single ionized helium

B

Deuterium atom

C

Hydrogen atom

D

Doubly ionized lithium

Text Solution

Verified by Experts

The correct Answer is:
D
`r prop (1)/(Z)`, for double ionized lithium `Z(=3)` will be maximum. So `r` will be minimum.
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