Question

if the number of electrons in an atom changes it becomes a(n) ______________. ion new element isotope isomer

Explanation:

An ion is formed when the number of electrons in an atom changes. A new element is formed when the number of protons changes. Isotopes have the same number of protons but different numbers of neutrons. Isomers are molecules with the same molecular formula but different structural arrangements.

Answer:

A. ion