Across
- 2. / Rb
- 3. / another name for sodium chloride
- 6. / The centre of an atom
- 7. / The kind of bonding between two non-metals
- 8. / the most reactive group one metal
- 10. / the chemical symbol for chlorine
Down
- 1. / the least reactive group one metal
- 3. / what do atoms do in covalent bonding
- 4. / what makes up the outer shell of an atom
- 5. / the chemical symbol for gold
- 9. / the kind of bonding between a metal and a non metal