This is a draft cheat sheet. It is a work in progress and is not finished yet.
Hydrogen
exception-not similar to his group members
1A-Alkali metals
soft metallic solids |
low density and low melting points |
highly reactive |
only in compounds |
2A-Alkaline Earth Metals
harder |
more dense |
higher melting points than 1A |
less reactive than 1A |
4A
bond with nonmetals |
2 additional bonds with Lewis bases |
only C forms strong pi bonds |
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5A
3 covalent bonds |
P can only form weak pi bonds --> double bonds |
only N and P can form pi bonds |
6A-Chalcogens
oxygen |
sulfur |
2nd most electronegative |
metal sulfides commonly found |
divalent |
strong pi bonds |
forms strong pi bonds |
2, 3, 4 to 6 bonds |
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