Identify the correct statements from the foll | vedclass

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(B) $I$. All alkaline earth metals (except $Be$) react with hydrogen on heating to form hydrides $(MH_2)$. $Be$ does not react directly with hydrogen.

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$II$ & $III$ only

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(B) $I$. All alkaline earth metals (except $Be$) react with hydrogen on heating to form hydrides $(MH_2)$. $Be$ does not react directly with hydrogen. Thus,statement $I$ is incorrect.$II$. Calcium hydroxide $(Ca(OH)_2)$,also known as slaked lime,is used in the purification of sugar by precipitating impurities as insoluble calcium salts. Thus,statement $II$ is correct.$III$. In the gaseous phase,$BeCl_2$ exists as a dimer $(Be_2Cl_4)$ at lower temperatures and as a monomer at higher temperatures. It is generally considered a dimer in the vapor phase. Thus,statement $III$ is correct.Therefore,statements $II$ and $III$ are correct.

Identify the correct statements from the following:
$I$. All alkaline earth metals give hydrides on heating with hydrogen.
$II$. Calcium hydroxide is used to purify sugar.
$III$. $BeCl_2$ is a dimer in gaseous phase.

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Identify the correct statements from the following:$I$. All alkaline earth metals give hydrides on heating with hydrogen.$II$. Calcium hydroxide is used to purify sugar.$III$. $BeCl_2$ is a dimer in gaseous phase.