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10 cards from this deck
Composition of compounds: which elements present and in what ratios
Groups of atoms that carry a charge and act as a single unit
For covalent compounds that form discrete molecules
For ionic compounds that form crystal lattices
Atoms share electrons to form molecules
Crystals with repeating lattice structures
NH4+NH_4^+NH4+
SO42−SO_4^{2-}SO42−
CO32−CO_3^{2-}CO32−
When a polyatomic ion appears more than once, e.g. (NH4)2SO4(NH_4)_2SO_4(NH4)2SO4
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