Write down formula of sodium sulphate in cross method
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Valency of sodium is 1
Valency of sulphate is 2
Now, write their valency down below their symbols and cross over their valency.
So, the formula of sodium sulphate will be
Na2SO4
Valency of sulphate is 2
Now, write their valency down below their symbols and cross over their valency.
So, the formula of sodium sulphate will be
Na2SO4
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