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O-LevelPhysicsNuclear Physics5054/11 · Oct/Nov 2016 · Q401 Mark

Which number is always equal to the proton number of a neutral atom of a radioactive isotope?

Athe number of electrons in the atom
Bthe number of neutrons in the atom
Cthe number of nucleons in the atom
Dthe number of particles in the atom

✓ Correct answer

A: the number of electrons in the atom

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About this question

Topic
Nuclear Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source
O-Level Physics, Oct/Nov 2016 Paper 1 Variant 1, question 40.

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