- protons, neutral, negatively, electrons
- protons, neutrons, neucleons
- neutrons, mass
- a. hydrogen-1, b. hydrogen-2, c. hydrogen-3
- Hg: 80, 201, 80, 80, 121
Mo: 42, 96, 42, 42, 54
Cu: 29, 64, 29, 29. 35
C: 6, 14, 6, 6, 8
P: 15, 31, 15, 15, 16
Pb: 82, 208, 82, 82, 126
Na: 11, 23, 11, 11, 12