Across
- 3. Which element would have similar properties to Sulfer?
- 4. Which element has 2 valence electrons and 4 energy levels?
- 5. Which element has 3 energy levels and
- 7. properties to Oxygen?
- 9. what group is magnesium in?
- 10. The chemical formula for sodium sulfate is Na2SO4.How many total atoms are in the formula?
- 12. Which element has 2 valence electrons
- 15. What is the least reactive element
- 16. Groups tell you an atom's
Down
- 1. How many valence electrons does gallium have?
- 2. Which element is the most reactive?
- 6. Which metal is the least reactive on the periodic table?
- 8. How many valence electrons are in an atom of each element in Group 15 in the periodic table?
- 11. How many energy levels does Calcium
- 13. 3 energy levels?
- 14. what group is iron in?
- 17. Periods tells you an atom's