Across
- 6. The number of protons found in the nucleus of an atom
- 7. I'm located in family 2 and my symbol is Ca
Down
- 1. Divides the metals from then nonmetals
- 2. My atomic number is 11
- 3. My symbol is O
- 4. A series of rows
- 5. My atomic mass is 39.10
- 6. The mass of an atomic particle
- 8. My atomic number is 53 and I'm located in period 5