Across
- 2. Symbol for atom is Ag
- 5. Can only form positive ions
- 6. We need this to live
- 7. The atomic weight is 12
- 10. Highly toxic metalloid
Down
- 1. Atomic mass is 14
- 3. This atom glows red
- 4. The atomic number is 12
- 8. The most stable nucleus
- 9. Elements that are somewhere between metals and non metals