Across
- 3. last name of the creator of the periodic table.
- 5. groups are blank and blank.
- 6. only gas left of the stair steps.
- 9. The column with one valence electrons.
- 10. positive charge
Down
- 1. periodic table is divided into blank.
- 2. no charge
- 4. periods are blank to blank.
- 7. first name for creator of the periodic table.
- 8. negative charge