Question

The number of

in the nucleus of an atom is the
atomic
of that element. Because atoms are
electrically neutral, the number of protons and
in an atom are equal. The sum of the
and neutrons is the mass number.
What’s the correct order it goes in

Answer 1

The number of protons in the nucleus of an atom is the atomic number of that element. Because atoms are electrically neutral, the number of protons and electrons in an atom are equal. The sum of the protons and neutrons is the mass number.