Across
- 1. atomic number of gallium followed by # of protons
- 4. protons in bromine
- 5. Protons in gold
- 7. what is the 1st element
- 9. atomic number of magnesium followed by # of protons
- 10. Name a noble gas
- 11. What is the 39th element
- 13. What is the 20th element
Down
- 2. protons in Arsenic
- 3. protons in Platinum
- 4. Number of protons in Selenium
- 6. atomic number of einsteinium followed by # of protons
- 7. atomic number of hafnium followed by # of protons
- 8. what is the 21st element
- 12. what is the 48th element