Determine whether a compound is ionic or covalent by simply looking at the formula.
This can be done very easily. Ionic compounds have one metal element, and one non-metal element. Covalent compounds are composed of 2, non-metal elements.
Ionic Examples:
ZnCl2, Zinc Chloride. Zinc is a metal, Chloride is a non-metal.
AgNO3, Silver Nitrate. Silver is a metal, Nitrate is a non-metal.
Covalent Examples:
SiF3, Silicon Trifluoride. Both are non-metals.
PO4, Phosphorus Tetroxide. Both are non-metals.
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