PhysicsNEET 2019Hydrogen spectrum and energy levels

Atoms

The total energy of an electron in an atom in an orbit is $- 3.4$ eV. Its kinetic and potential energies are, respectively:

A. $- 3.4$ eV, $- 3.4$ eV
B. $- 3.4$ eV, $- 6.8$ eV
C. $3.4$ eV, $- 6.8$ eV✓
D. $3.4$ eV, $3.4$ eV

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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