Periodic table
Across
- 3. 16oxygen
- 4. 4 titanium
- 5. 1 hydrogen
- 6. 11coper
- 7. 6 chromium
- 8. 10nicckel
- 9. 8 iron
- 10. 12zinc
- 11. 3 yttrium
Down
- 1. 13boron
- 2. 2 berillium
- 3. 17fluorine
- 4. 5 vanadium
- 5. 9 cobalt
- 6. 18argon
- 7. 7 technetium
- 8. 15nitroen
- 10. 14carbon