Perhaps it would be best to start by spelling formulacorrectly.
SF4
FeI2
The chemical formular for Iron(III) sulfate dihydrate is Fe2(SO4)3.2H2O.
KNO3
h2so4
Formula: Mg3P2
Formula: PCl3
It is simply NH4Br.
CsBr
It is a common typographic error for formula.
Zn(Mno4)7
by using formular