Number of lons and Formula Units (lonic Compounds)
Build or draw a crystal model of MgCl₂ that is composed of two MgCl₂ formula
units. (One formula unit consists of one Mg2+ ion and two CI¯ ions.)
1. The smallest whole-number ratio of magnesium ion ions to chloride ions Mg²+ :
CI =
2. How many Mg2+ ions are there in your mini-crystal model?
3. How many CI ions are there in your mini-crystal model?