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TRANSCRIPT
The Chemical Families
1. Metals Groups 1-12 plus 10 more elements
Lustrous – Shiny “metallic” appearance
Solids at room temperature – except mercury (Hg)
High melting points and high densities
Malleable (able to be hammered into shapes)
Ductile (able to be drawn into wire)
The Chemical Families
2. Alkali Metals Group 1 (except Hydrogen)
Soft, silver-colored metals
Lower densities than other metals
One loosely bound valence electron in outer shell
Highly reactive, especially with the halogens
The Chemical Families
3. Alkaline Earth Metals Group 2
Soft, silver-colored metals
Two valence electrons in the outer shell
The Chemical Families
4. Transition Metals Groups 3-12
Very hard metals
High melting and boiling points
High electrical conductivity
Malleable
The Chemical Families
5. Metalloids Semiconductors
B, Si, Ge, As, Sb, Te
Possess some characteristics of metals and some of nonmetals
Intermediate conductors of heat and electricity under certain conditions
The Chemical Families
6. Nonmetals Found in Groups 13-18, and Hydrogen
Gain electrons easily
Poor thermal and electrical conductors
Brittle solids
Little or no metallic luster, various colors
The Chemical Families
7. Halogens Group 17
Seven valence electrons (only one short of a stable octet)
Highly reactive, especially with alkali metals and alkaline earth metals
The Chemical Families
8. Noble Gas Group 18
Do not react easily with other elements
Complete valence shell (stable octet)
Low boiling points (all gases at room temperature)