Across
- 3. Cu
- 7. Group 6, Period 4
- 9. Og
- 10. I am a column in the Periodic Table
- 11. I have 69 protons
- 13. I have 18 neutrons in group 18
- 14. Ag
- 18. Group 12 Period 4
- 19. Au
- 20. I have 42 protons
- 21. You get my number by subtracting atomic mass from atomic number
- 22. Group 17 Period 5
- 23. I have the same meaning as electron
- 24. Os
Down
- 1. I have 20 neutrons in group 2
- 2. I have 163 neutrons in group 7
- 3. I have 28 neutrons in group 6
- 4. I am a row in the Periodic Table
- 5. Group 9 Period 4
- 6. I have 25 protons
- 8. I have 5 neutrons in group 2
- 12. I have 1 proton
- 15. s
- 16. Group 8 Period 4
- 17. I have 2 protons