A metal M readily forms its sulphate MSO...

A metal M readily forms its sulphate `MSO_(4)` which is water soluble. It forms oxide `MO` which becomes inert on heating. It forms insoluble hydroxide which is soluble in `NaOH`. The metal `M` is:

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The correct Answer is:

`BeSO_(4)` is highly soluble in water.Beo is amphoteric
`Beo+H_(2)OtoBe(OH)_(2)darr`
`Be(OH)_(2)+2NaOHtoNa_(2)[Be(OH)_(2)]`

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