Which have different numbers of electrons? different ions of an element different isotopes of an element the nucleus of an element each of the atoms of an element

different ions of an element

Explanation:

An ion is an atom that has different number of protons and electrons.

An isotope is an atom of an element with a different number of neutrons.

The nucleus of an element have only protons and neutrons.

Each of the atoms of an element have same number of protons, electrons, and neutrons.

its b

explanation:

there is no change