Polyatomic Ions - Ions that contain more than 1atom (ex: OH-; NH4+)), Cations - Positively charged ions, Anions - Negatively charged ions, Diatomic molecules - Molecules that are made up of atoms of the same element., Binary Compounds - Compounds that only contain 2 elements, Molecular Formula - A formal listing of what and how many atoms are in a molecule, Transition Metal - Elements found in groups 3-12 in the periodic table.,

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