Question

Write the chemical formulaof all the compounds that can be formed by the combination of the followin Mg ^2+, Fe ^3+,O^2-, PO4^3-

Answer 1

The cations are Ca ++ , Fe +++ , K +

The anions are Cl - , SO2 -- , SO4 --

So, following compounds can be made from the given cations and anions,

CaSO4 (calcium sulphate)

CaSO2 (calcium hyposulphite)

CaCl2 (calcium chloride)

FeCl3 (ferric chloride)

Fe2(SO4)3 (ferric sulphate)

Fe2(SO2)3 (ferric hyposulphite)

KCl (potassium chloride)

K2SO4 (potassium sulphate)

K2SO2 (potassium hyposulphite)

Hope it helps!

Answer 2

Answer:

Explanation:

Mg2+ and

PO4^3- . The charge of Mg which is 2 will interchange with PO4 's charge which is 3(because in compound formation,the negative sign is always ignored) to yield the compound Mg3(PO4)2 .Take care