Mr(CaF2) = 40 + 19*2 = 78
W(F) = Ar(F) * n / Mr(CaF2) * 100% = 19*2 / 78 *100% = 49%
Mr(Na2AlF6) = 23*2 + 27 + 19*6 =187
W(F) = Ar(F) * n / Mr(Na2AlF6) *100% = 19*6 / 187 *100% =61%
богаче фтором Na2AlF6