Isotopes of an element

Name: Isotopes of an element
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Isotopes are defined by having the same number of protons (which determines the element), but differing numbers of neutrons. This gives isotopes of the same element different atomic masses. Isotopes may be stable or unstable and some may be radioactive, but this is not a defining characteristic of all isotopes. The number of electrons in an atom is determined by the number of protons, so isotopes of the same element have the same number of electrons.

Isotopes of an Element