Periodic Table Groups

1
Periodic Table Groups

• Ch.19, Sec.1

2
Groups

• 3 main groups
• Metals
• Nonmetals
• Metalloids (Semi-Conductors)

3
Metals

• Middle and left of table
• Conductors
• Shiny solids
• Malleable (bendable)

4
Special Metal Groups

1. Alkali Metals
2. Alkaline Earth Metals
3. Transition Metals
4. Lanthanides
5. Actinides

5
Alkali Metals

• Group (column) 1
• Very reactive
• 1 valence e-
• 1 cation
• In nature as compounds
• Ex NaCl (salt)

6
Alkaline Earth Metals

• Group 2
• 2 valence e-
• 2 cations
• Useful to humans

7
Transition Metals

• Groups 3-12
• Not as reactive
• Cations
• Useful metals

8
Lanthanides

• Part of transition metals
• Period 6 - below rest of table

9
Actinides

• Part of transition metals
• Period 7 - below rest of table

10
Nonmetals

• Right side of table except for Hydrogen
• Solid, liquid, or gas
• Dull, brittle, and nonconductors

11
Special Nonmetal Groups

1. Halogens
2. Noble Gases

12
Halogens

• Group 17
• Very reactive
• 7 valence e-
• -1 anions
• Most compounds

13
Noble Gases

• Group 18
• Full outer shells
• Unreactive

14
Metalloids / Semiconductors

• On zig-zag
• Nonmetals that can conduct
• Ex silicon - used in computers