Question

which term describes elements with different atomic masses due to varying numbers of neutrons?
○ nuclei
○ atoms
○ isotopes
○ atomic mass units

Explanation:

Nuclei are the central parts of atoms; atoms are the basic units of elements; atomic mass units are a measurement scale for atomic mass. Isotopes are defined as atoms of the same element that have the same number of protons but different numbers of neutrons, resulting in different atomic masses.

Answer:

○ isotopes