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(B) $Be(OH)_2$ is amphoteric,but the hydroxides of $Mg$,$Ca$,$Sr$ and $Ba$ are basic. The strength increases from $Mg$ to $Ba$.Carbonates of group $2$

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Thermal stability decreases from $BeCO_3$ to $BaCO_3$

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(B) $Be(OH)_2$ is amphoteric,but the hydroxides of $Mg$,$Ca$,$Sr$ and $Ba$ are basic. The strength increases from $Mg$ to $Ba$.Carbonates of group $2$ elements become more thermally stable down the group. The larger compounds require more heat than the lighter compounds in order to decompose.$BeCO_3$$$MgCO_3$$540 \ ^\circ C$$CaCO_3$$900 \ ^\circ C$$SrCO_3$$1290 \ ^\circ C$$BaCO_3$$1360 \ ^\circ C$The solubility of the sulphates in water decreases down the group. $Be > Mg \gg Ca > Sr > Ba$. The higher solubilities of $BeSO_4$ and $MgSO_4$ are due to the high enthalpy of solvation of the smaller $Be^{2+}$ and $Mg^{2+}$ ions.On heating,the alkaline earth metal nitrates decompose to give metal oxide,nitrogen dioxide and oxygen.$2 M(NO_3)_2 \xrightarrow{\Delta} 2 MO + 4 NO_2 + O_2$ $(M = Be, Mg, Ca, Sr, Ba)$

Which one of the following statements is $NOT$ correct about the compounds of alkaline earth metals?

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