The chemical formula for the compound strontium sulfide, which contains Sr2+ and S2- ions, is ______.

Question

aaronq · Answer

the point is to make the compound neutral by balancing the charges

anonymous · Answer

Can you help me out? I'm doing a study guide.

aaronq · Answer

so, strontium is a cation with a charge 2+ charge $(Sr^{2+})$, sulphide is an anion and it's charge is 2- $(S^{2-})$, how many of each do you need to make the charge zero?

anonymous · Answer

I'm sorry. I will probably never understand this.

aaronq · Answer

one has a 2+ charge, the other has a 2-, Add them up: (2)+(-2)=0

so you need one of each, so the formula is $SrS$.