Across
- 4. transition metals
- 7. atomic mass 79
- 8. electrons 16
- 9. atomic mass 11
- 10. atomic number 2
- 13. grup 3
- 14. period 2
Down
- 1. non reactiive metals
- 2. neutrons 6
- 3. atomic mass 22
- 5. alkine metals
- 6. neutrons 10
- 11. transitions metals
- 12. electrons 18