Which element's atoms have the greatest average number of neutrons? germanium (Ge) arsenic (As) selenium (Se) bromine (Br)

If you look at the periodic table, the atomic number provides the number of protons in the atom of each element.

Ge has an atomic number of 32

As has an atomic number of 32

Se has an atomic number of 34

and Br has an atomic number of 35

Therefore, Br has the highest number of protons