Question

Explain how a chemical formula is formed using calcium icon and polyatomic sulphate ion​

Answer 1

Answer:

The compound is going to be, quite simply, CaSO4, which is the chemical formula for Plaster of Paris. we obtain this from heating gypsum, which is basically  hydrated calcium sulphate (2CaSO4.H2O)

2CaSO4.H2O ------> 2CaSO4 + H2O

if you're confused about how the compound is formed, valency of Ca ion is +2 and valency of SO4 ion is -2, so Ca ion donates an electron pair to SO4 ion , and forms an ionic bond.

Answer 2

The compound is going to be, quite simply, CaSO4, which is the chemical formula for Plaster of Paris. we obtain this from heating gypsum, which is basically hydrated calcium sulphate (2CaSO4.H2O)

2CaSO4.H2O ------> 2CaSO4 + H2O

if you're confused about how the compound is formed, valency of Ca ion is +2 and valency of SO4 ion is -2, so Ca ion donates an electron pair to SO4 ion , and forms an ionic bond.

Hope it helps you