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10 cards from this deck
Valence electrons of atoms in molecules/compounds
Electrons in outermost shell of an atom
Use group number of the element
Full outer electron shells (very stable)
One atom loses electrons, other gains
Both atoms want to gain electrons (share)
Ionic = transfer; Covalent = sharing
Atoms want 8 electrons in outer shell
Total electrons lost = total electrons gained
A dash for each shared pair
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