Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: Ca2+, V5+, Br-

Answer:

CaS, CaBr₂, VBr₅, and V₂S₅.

Explanation:

• The ionic compound must exhibit neutrality; its total charge should equal zero.

• A binary ionic compound is formed from two distinct ions.

Ca²⁺ combines with either Br⁻ or S²⁻ to create binary ionic compounds.

• CaS is created when Ca²⁺ pairs with S²⁻ resulting in the neutral binary ionic compound CaS.

• CaBr₂ results from the combination of one mole of Ca²⁺ with two moles of Br⁻ to form the neutral binary ionic compound CaBr₂.

V⁵⁺ can also unite with either Br⁻ or S²⁻ to produce binary ionic compounds.

• V₂S₅ is formed when two moles of V⁵⁺ bond with five moles of S²⁻ yielding the neutral binary ionic compound V₂S₅.

• VBr₅ is produced by combining one mole of V⁵⁺ with five moles of Br⁻ to form the neutral binary ionic compound VBr₅.

Thus, the empirical formulas for four binary ionic compounds that may be produced are: CaS, CaBr₂, VBr₅, and V₂S₅.