Across
- 2. What is the symbol for the element with atomic mass approximately 40?
- 3. Which element in period 3 is in group 14?
- 5. What is the name of the electrons in the outershell?
- 7. What element has 2 valence electrons and is in group 2?
- 10. What element is located in period 3, group 18?
- 12. What is the element with atomic mass approximately 1?
- 13. What element has an atomic number of 2?
- 14. Which element in period 2 has 5 valence electrons?
- 15. What element has the symbol S?
Down
- 1. Which element has an atomic number of 17?
- 4. Which element is in period 2, group 14?
- 6. Which element is located in group 2, period 2?
- 8. How many valence electrons does the element with the symbol Ne have?
- 9. Which element has an atomic number of 12?
- 11. Which element in period 4 has 7 valence electrons?