A metal M readily forms a water-soluble sulph | vedclass

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(B) The alkaline earth metal $Be$ (Beryllium) exhibits anomalous properties compared to other group $2$ elements.$1$. $BeSO_4$ is water-soluble due to

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$Be$

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(B) The alkaline earth metal $Be$ (Beryllium) exhibits anomalous properties compared to other group $2$ elements.$1$. $BeSO_4$ is water-soluble due to the high hydration enthalpy of the small $Be^{2+}$ ion.$2$. $Be(OH)_2$ is water-insoluble and is amphoteric in nature,meaning it reacts with both acids and bases (e.g.,$Be(OH)_2 + 2NaOH \rightarrow Na_2[Be(OH)_4]$).$3$. $BeO$ is a hard,covalent solid with a very high melting point and is amphoteric.Therefore,the metal $M$ is $Be$.

$A$ metal $M$ readily forms a water-soluble sulphate and a water-insoluble hydroxide $M(OH)_2$. Its oxide $MO$ is amphoteric,hard,and has a high melting point. The alkaline earth metal $M$ must be

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