Across
- 3. calcium, germanium
- 6. protactinium, nitrogen, iodine, carbon
- 8. boron, uranium, nitrogen, nitrogen, yttrium
- 11. lutetium, rhenium
- 12. protactinium, thorium
- 15. americium, erbium, iodine, calcium
- 16. potassium, nobelium, carbon, potassium
- 17. phosphorus, hydrogen, oxygen, neon
- 18. molybdenum, rhenium
Down
- 1. tungsten, iodine, rhenium
- 2. protactinium, iodine, nitrogen
- 4. titanium, nitrogen, yttrium
- 5. samarium, actinium, potassium
- 7. copper, telunium
- 8. beryllium, argon
- 9. lutetium, carbon, potassium, yttrium
- 10. tungsten, hydrogen, iodine, sulfur, phosphorus
- 11. lanthanum, cerium
- 13. radium, iodine, nitrogen
- 14. tungsten, oxygen, rhenium