Ionic, Covalent, or Both?

Ionic, Covalent, or Both?

Tell whether each compound is ionic (metal-nonmetal), covalent (nonmetal-nonmetal) or BOTH (having a polyatomic ion)

 

1.   CaCl2
2.   CO2
3.   H2O
4.   BaSO4
5.   K2O
6.   NaF
7.   Na2CO3
8.   CH4
9.   SO3
10.    LiBr

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