In which of the following systems will t

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Target Exam

CUET

Subject

Physics

Chapter

Atoms

Question:

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

Options:

Single ionized helium

Deuterium atom

Hydrogen atom

Doubly ionized lithium

Correct Answer:

Doubly ionized lithium

Explanation:

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