Name: Jerry F. Taghap BSELX II-4 Period:______ Protons, Neutrons, and Electrons Practice Worksheet Atomic symbol Atomic number B Na Ga Y Cu Tc Pb Yb Ac Mo Tl Fm No Tm Sg Ne K He Ti Fe Be S V 5 11 31 39 29 43 82 70 89 42 81 100 102 69 106 10 19 2 22 26 4 16 23 Protons Neutrons Electrons Mass Number 5 11 31 39 29 43 82 70 89 42 81 100 102 69 106 10 19 2 22 26 4 16 23 6 13 37 50 35 57 125 102 136 53 125 159 159 101 159 12 20 2 27 30 5 16 28 5 11 31 39 29 43 82 70 89 42 81 100 102 69 106 10 19 2 22 26 4 16 23 11 24 68 89 64 100 207 172 225 95 206 259 261 170 265 22 39 4 49 56 9 32 51 Atomic Mass 10.8 23.0 69.7 88.9 63.5 (98) 207 173 227 95.9 204.4 257 259 169 263 20.2 39.1 4.00 47.9 55.8 9.01 32.1 50.9