Question

multiple - choice question
the number of protons determines
the charge of an atom.
the mass of an atom.
the identity of an atom.
the appearance of an atom,
rewatch
submit

Explanation:

The number of protons in an atom's nucleus is known as the atomic number. Each element has a unique atomic number, which determines its identity. The charge of an atom is determined by the balance between protons and electrons. The mass of an atom is determined by the sum of protons and neutrons. The appearance of an atom is not determined by the number of protons.

Answer:

the identity of an atom.