Periodic Table

3. Noble gases are very because their outer shells are completely full
5. most of the metals have 2 valence electrons and are in the middle of the table
9. completely unlike metals; take up the right side of the periodic table
14. earth metals make up group 2A
17. the amount of on the outer shell grows as you move to the right of the periodic table
18. are extremely reactive because they only need one more electron to complete the last shell
20. Halogens, alkali metals, and hydrogen are all extremely
21. the periodic table has periods

1. the amount of electron determines the period of an element
2. take up most of the left side, are hard, and have high melting points
4. range from atomic # 89-103 and most of them must be synthesized
6. Metalloids look sort of like a shape on the periodic table
7. gases are non-reactive and are on the right side
8. a group of elements that are like both metals and nonmetals
10. amount of columns on the periodic table
11. The amount of electrons is what determines groups on the periodic table
12. elements in the same group are often very , or alike
13. elements ranging from 57 to 71; inner transition metals
15. horizontal rows; determined by # of electron shells
16. most, if not all, of the elements in the same family, have that are alike or close
19. The state of matter of most elements is .