When magnesium ions form compounds with bromide ions, how many magnesium ion(s) are needed to form a neutral compound?
Well magnesium forms a
and bromine forms a
And so, if these ions are to make music together, and form a NEUTRAL ionic solid, we need 2 equiv of anion, and 1 equiv of metal ion:
All I have done here is to conserve mass and charge. Are they conserved?