Question

All atoms of the same element:

have the same number of atoms
have the same number of neutrons
have the same number of electrons
have the same number of protons

Answer 1

have the same number of protons

Step-by-step explanation:

The number of protons in an atom determine what element it is. The number of electrons and neutrons can vary from atom to atom of the element, as long as all the atoms have the same number of protons.