Across
- 1. has 10 protons
- 4. the number of periods in the periodic table
- 6. has a atomic mass of 107.88
- 9. the group number that has 0 valence electron
- 10. what you use to oraganize the periodic table and in the nucleus
Down
- 1. the type of gases in group 17
- 2. first element
- 3. has the symbol Au
- 5. has a negative
- 7. what has 8 protons
- 8. has no charge