Across
- 2. What is helium’s atomic mass
- 3. What is the 57th element
- 5. What is galliums atomic number
- 8. What is oganessons atomic number
- 9. 1st Family
- 10. How many gases are there
- 13. Who made the periodic table
- 15. What is bromines atomic number
Down
- 1. 13th family
- 2. How many transition metals are there
- 4. without a family
- 6. How many alkali earth metals are there
- 7. How many Alkali Metals are the
- 11. What element is #100
- 12. 18th family
- 14. How many halogens are there