UNIT 2 - Polyatomic Ions Flashcards by Grace Evangelista

Q

Polyatomic ion

A

an ion made up of two or more covalently bonded atoms (eg. carbonate ion)

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Q

Steps for writing the chemical FORMULA of a COMPOUND WITH POLYATOMIC IONS

A

Identify each ion and its charge. Write the positive and negative ions.
Below them, write the metal and nonmetal elements again, reverse the ion charges
Flip-Flop & Drop
Use brackets around the polyatomic ion. Simplify the ratio (reduce subscripts by the common factor)

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