Across
- 4. Which element is the number 27?
- 6. What is the third noble gas? (from the top)
- 7. Which element has an atomic mass of 72.64?
- 8. Which element has the atomic mass 223?
- 10. What is the first halogen? (from the top)
Down
- 1. Which element has the atomic symbol Ta?
- 2. Which element has the atomic symbol Au?
- 3. What is the sixth alkaline earth metal?
- 5. Which element is number 22?
- 9. What is the fifth alkali metal?