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Q.

The formula of calcium sulphate is

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a

${Ca}_{2} {SO}_{4}$

b

${Ca(SO}_{4})_{2}$

c

${CaSO}_{4}$

d

${CaSO}_{3}$

answer is C.

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Detailed Solution

To write the chemical formula of a compound we have to use Criss-Cross method with

the help of valence of ions.

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