Across
- 2. (Radioactive noble gas found in soil)
- 4. (Element found in fertilizers and matches)
- 6. (Metal used to strengthen steel)
- 8. (Metal essential for immune function)
- 9. (Lightest metal; used in batteries)
- 11. (Noble gas used in high-intensity lamps)
- 12. (Strong, lightweight metal used in aircraft)
Down
- 1. (Yellow non-metal used in gunpowder and rubber)
- 3. (Gas essential for respiration)
- 5. (Radioactive element used as nuclear fuel)
- 7. (Element used in strengthening steel)
- 10. (Noble gas used in bright advertising signs)