Arrange the following ions in order of increasing ionic radius: potassium ion, chloride ion, phosphide ion, calcium ion

Enter the FORMULA for each ion in the boxes below.

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water