PhysicsNEET 2020Rutherford and Bohr models

Atoms

For which one of the following is the Bohr model not valid?

A.Hydrogen atom
B.Singly ionised helium atom ( $H e^{+}$ )
C.Deuteron atom
D.Singly ionised neon atom ( $N e^{+}$ )✓

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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Last revised 7 Sept 2026. Found a mistake? Tell us — corrections are the fastest thing we act on.

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