Across
- 4. The fifth element of the periodic table
- 6. The thirteenth element of the periodic table
- 7. The fourteenth element of the periodic table
- 9. The first element of the periodic table
Down
- 1. The ninth element of the periodic table
- 2. The twentieth element of the periodic table
- 3. The eleventh element of the periodic table
- 5. The sixth element of the periodic table
- 8. The seventeenth element of the periodic table