MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryAtomic StructureIntro

As an electron moves away from the nucleus, its potential energy

0.Increases

1.Decreases

2.Remains constant

3.First increases then decreases

Explanation

Potential energy of electron = −Ze²/(4πε₀r). As r increases (moving away from nucleus), PE becomes less negative (increases, approaching zero). PE is always negative but increases toward zero as distance increases.

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