Across
- 3. positive charge
- 7. chemical element in common with typical metals
- 9. number of protons
- 11. a substance on the periodic table
- 12. elements that lacks metallic properties
- 14. negative charge
- 16. any element in the group O(helium)
- 17. column of elements
Down
- 1. element symbol
- 2. row of elements
- 4. middle part of atom
- 5. Russian, creator of periodic table
- 6. smallest part of molecule
- 8. conductors of electricity, chemical reactivity
- 9. mass of atomic particle
- 10. patterns of electron density
- 13. electron electron on edge of atom
- 15. nuetral charge