Across
- 3. discovered in Paris
- 5. Prefix is Xe
- 6. Mr Machus favorite element
- 7. Prefix is Fe
- 10. Prefix is Ag
- 12. Named after Albert Einstein
- 13. Prefix is Au
- 15. Most radioactive metal
- 16. Used to make atomic bombs
- 17. Most reactive metal
Down
- 1. Discovered in America
- 2. First element
- 4. Prefix has a k in it
- 6. Prefix is Hg
- 8. Has lowest melting point of all metals
- 9. Used in batteries
- 11. Least radioactive element
- 14. Densest element
- 17. Used in Chicago pile
- 18. Least reactive halogen