Across
- 3. a negatively charged ion
- 4. when a valence electron does not feel the full attractive force of the nucleus due to core electrons
- 5. the element with the smallest atoms on the periodic table
- 8. ________________ metals can form more than one kind of cation
- 10. the last stable element
- 11. Main Group VII
- 14. a positively charged ion
- 16. the father of the periodic table
- 17. a nonmetal that is a liquid at room temperature and pressure
Down
- 1. these 7 elements belong to this special group: hydrogen, oxygen, nitrogen, chlorine, bromine, iodine and fluorine
- 2. these elements have properties of both metals and non metals
- 6. most of the elements are this kind of element
- 7. the ______________ gases are Main Group VIII and do not react with other elements.
- 9. Main Group I
- 12. the periodic table is organized by increasing atomic ________________.
- 13. divides the metals from the nonmetals
- 15. a row on the periodic table