1.

Ametal M shows variable valencies 2 and3. Calculate the ratio of oxygen atom present in their corresponding sulphates.

Answer»

`1:3`
`3:1`
`3:4`
`3:2`

Solution :LET the METAL be X . The compounds possible are `XSO_(4)and X_(2)(SO_(4))_(3)`.The NUMBER of oxygen atomspresentare 4 and 12 respectively . Ratio of oxygen ATOMS are`4 : 12=1:3`


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