Across
- 4. 118 of these
- 6. yellowish precious metal
- 7. group of 7 elements e.g iodine
- 8. element forms up to 10 million compounds
- 9. metallic element Mg
- 10. rows on table
- 12. group of gases e.g argon
- 13. 9th most abundant element in earth’s crust
Down
- 1. yellow green gas used to disinfect water
- 2. inventor of table
- 3. chemical sign Ag
- 5. lightest noble gas
- 6. Columns on table
- 8. molecule with atoms of more than one element
- 11. chemical sign Fe