1.

Three elements Na S and O combine to form a compund Na_(2_SO_(3) what is the valency of S in this compund ?

Answer»

`H_(2)SO_(4)gtH_(3)PO_(3)gtCH_(3)COOH`
`H_(3)PO_(3)gtH_(2)SO_(4)gtCH_(3)COOH`
`CH_(3)COOHgtH_(3)PO_(3)gtH_(2)SO_(4)`
`CH_(3)COOHgtH_(23)SO_(4)gtH_(3)PO_(3)`

Solution :`H_(2)SO_(4)gtH_(3)PO_(3)gtCH_(3)COOH`


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