Date ____________
Period ___________
Fill in the chart below with the correct number.
Zn+2 P-3 S-2 Fe+2 Fe+3
Protons
Electrons
Sr+2 Mg+2 K+1 H+ Se-2
Protons
Electrons
18 8O-2 235 92U+1 17 8O-2
206 82 Pb+4 197
79 Au+3
Protons
Electrons
Neutrons
___ ____ 40 20 Ca+2 34 16 S -2 244 94 Pu
Protons 5 17 20
Electrons 5 18 18
Neutrons 6 18 20