Across
- 3. equal to the atomic number and has a positive charge
- 7. the nme of group 15
- 10. The columns that go up and down and have numbers at the top of the page
- 11. equivalent to the ammount of protons.
- 12. not metals
- 16. an element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
- 17. group one
Down
- 1. this group is named chalcogens
- 2. neither gass nor liquid
- 3. The columns that go left and right and have numbers on the sides
- 4. has a negative charge and is equal to the atomic mass- atomic number
- 5. in family 18 but only has 2 valence electrons
- 6. the name of group 18
- 8. this group is named halogens
- 9. contains abunch of elements that are in groups and periods
- 10. named alkaline-earth-metals
- 13. how long a element takes before halving its life
- 14. neither solid nor liquid
- 15. The opposite of non metals