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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

doubly ionized lithium

B

singly ionized helium

C

deuterium atom

D

hydrogen atom

Text Solution

Verified by Experts

The correct Answer is:
A
Radius of first orbit , `r prop(1)/(Z)`, For doubly ionized lithium, `Z(=3)` will be maximum, hence for doubly ioized lithium, r will be minimum.
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