Atoms And Nuclei Question 129

Question: In which of the following systems will the radius of the first orbit $ (n=1) $ be minimum [Kerala PET 2002; CBSE PMT 2003]

Options:

A) Single ionized helium

B) Deuterium atom

C) Hydrogen atom

D) Doubly ionized lithium

Show Answer

Answer:

Correct Answer: D

Solution:

$ r\propto \frac{1}{Z}, $ for double ionized lithium $ Z(=3) $ will be maximum. So r will be minimum



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