What is the correct formula unit for the ionic compound, strontium chloride?

? SCl
? SrCl2
? SrCl
? Sr2Cl
? SnCl2

1 answer

The correct formula unit for strontium chloride is SrCl2.

Strontium (Sr) has a +2 charge, and chloride (Cl) has a -1 charge. To balance the charges, you need two chloride ions for each strontium ion, resulting in the formula SrCl2.