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The formula unit for an ionic compound is similar to an empirical formula in that both give the simplest whole-number ratio of atoms of each element in a compound.
FeS
Emperical formula give the smallest whole number ratio of atoms in a compound
Calcium Bromide
the compound (P2O4) is ionic is false.
an empirical formula For an ionic compound, the empirical formula is called a formula unit.
NaF is the empirical formula
Formula: K3N
The formula unit for an ionic compound is similar to an empirical formula in that both give the simplest whole-number ratio of atoms of each element in a compound.
What you write for an ionic compound is called the formula unit, but the formula unit is almost always the same as the empirical formula. The answer to your question could not be the molecular formula because an ionic compound is not a molecule.
Silver oxide is an ionic compound so its molecular and empirical formula is same Ag2O
FeS
Emperical formula give the smallest whole number ratio of atoms in a compound
Calcium Bromide
the compound (P2O4) is ionic is false.
Potassium chloride is a ionic lattice which is made out of potassium ions and chloride ions. Therefore, separate 'molecules of this compound do not exist. The empirical formula itself is KCl which is used also as the chemical formula for the compound.
Magnesium usually forms divalent cations and fluorine usually forms monovalent anions. Therefore, the predicted empirical formula is MgF2.