Across
- 3. transition metal used in electric wires
- 5. alkali metal present in common salt
- 8. main constituent in air
- 10. light metal used for aircraft frames
- 12. halogen with a reddish color
Down
- 1. the lightest element
- 2. alkali metal that gives a purple flame
- 4. it is used for bleaching
- 6. transition metal present in steel
- 7. the lightest noble gas
- 9. gas inhaled in respiration
- 11. halogen present in sea water