Question

The atomic number gives the ____ of an atom.
mass
number of neutrons
number of protons
radioactivity

Answer 1

i say proton but if it more than one answer proton and neutron

Answer 2

That answer is protons, it wouldn't give you the number of neutrons in the case of an isotope

@mathislovemathislife

Answer 3

atomic number is the number of protons. An atom has equal number of protons and electrons. Atomic mass number is the number of protons and neutrons.