Arrange the compounds in order of decreasing formula mass.

WO2, Rb2SO4, Pb(C2H3O2)2, RbI

Solution 86P

Step 1:

Formula mass:-The formula mass of a molecule is the sum of the atomic weights of the atoms in the empirical formula of the compound. Also Known As: formula weight. Formula Mass Units: Formula weight is given in atomic mass units

Step 2:

Formula mass of WO2

Atomic weight of W =183, Atomic weight of O = 16

Hence formula mass of WO2 is = 183 + 216 = 215