Across
- 5. an element with similar properties as helium
- 7. number of groups on the periodic table
- 9. metals in group 1
- 11. elements in group 18
- 12. a column on the periodic table
- 14. elements in group 17
Down
- 1. table of elements arranged by increasing atomic number
- 2. elements in groups 3-12
- 3. metals in group 2
- 4. elements found on the right side of the periodic table
- 6. number of periods on the periodic table
- 8. elements found on the left side of the periodic table
- 10. an element with similar properties as sodium
- 13. a row on the periodic table