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How many atoms of carbon are in Al₂(CO₃)₃?
2-Al, 3-C, 9-O
Oxidation number
A positive or negative number assigned to an atom to indicate its degree of oxidation or reduction. (describes how it will behave in a compound)
isotope
atoms of the same element that have the same atomic number but different masses due to a different number of neutrons
chemical formula
an expression that indicates the number and type of atoms present in the smallest representative unit of a substance
polyatomic ion
group of atoms that behave as an ion
ion
a charge particle due to an unequal number of protons and electrons
formula unit
representative particle of an ionic compound
binary compound
compound made from 2 elements
cation
positively charges ion
anion
negatively charged ion
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