Across
- 5. Group 2
- 7. Elements that touch the staircase
- 8. Metals are on this side of the periodic table
- 9. Columns
- 11. Group 18
- 13. Nonmetals are on this side of the periodic table
- 14. Organized periodic table by atomic mass
- 15. How the periodic table was first arranged
Down
- 1. Elements in the same group have similar ______
- 2. Organized periodic table by atomic number
- 3. d-block metals in the center of the periodic table
- 4. Separates metals and nonmetals
- 6. Group 17
- 10. Rows
- 12. Group 1