3. The correct formula for the compound formed from strontium ion and chromate ion is? (write formula)

can someone explain how to do this

SrCrO4 is answer but i dont get it

This post was edited by bakalolo on Sep 12 2013 12:59pm

Strontium forms an ion with a 2+ charge since it has 2 electrons to losr in its outer valence shell. Then CrO4 just has a charge of 2- so you dont need to balance anything or whatever. SrCrO4 will have an overall neutral charge so youre all good.