In an atom, the number of neutrons determines most specifically the ________.

Question

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The number of neutrons in an atom determines its isotope, which is a variant of the chemical element with a specific number of neutrons. Isotopes of an element have the same number of protons (which determines the chemical element) but different numbers of neutrons. This affects some properties of the atom, such as its atomic mass, but not its chemical properties or ion state (which depend on the number of electrons and the net charge).

In an Atom, the Number of Neutrons Determines Most Specifically