Across
- 2. a positively charge ion
- 6. calcium and magnesium are in this group of metals
- 7. rows on the periodic table
- 8. groups 3-12
- 9. 5f block
- 10. group 1 elements
- 12. a negatively charged ion
- 13. energy needed to remove an electron
- 14. an element with a complete octet (or duet in Helium's case)
- 15. gas, or dull looking brittle solids; sometimes liquids
- 17. s, p , d, or f
- 18. repetition of chemical/physical properties of the elements
- 20. group 17
- 21. columns on the periodic table
Down
- 1. tendency of an element to attract electrons
- 3. shiny, solid, smooth, good conductor of heat and electricity
- 4. groups 1, 2, and 13-18
- 5. the tendency to have 8 valence electrons
- 11. 4f block
- 16. properties of both metals and nonmetals
- 19. a charged element with an unequal amount of protons and electrons