Identify the correct statements from the foll | vedclass

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(B) $I$. $LiF$ is less soluble in water than $NaF$ due to its very high lattice energy. This statement is correct.$II$. $LiCl$ and $MgCl_2$ are covale

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$I$ & $III$

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(B) $I$. $LiF$ is less soluble in water than $NaF$ due to its very high lattice energy. This statement is correct.$II$. $LiCl$ and $MgCl_2$ are covalent in nature and are soluble in ethanol, not insoluble. This statement is incorrect.$III$. Both $Li$ and $Mg$ show diagonal relationship and both form nitrides ($Li_3N$ and $Mg_3N_2$) on reaction with $N_2$. This statement is correct.$IV$. $Na_2CO_3$ is thermally stable and does not decompose to give $CO_2$ on heating. This statement is incorrect.Therefore, statements $I$ and $III$ are correct.

Identify the correct statements from the following:
$I$. $LiF$ is less soluble in water than $NaF$
$II$. Both $LiCl$ and $MgCl_2$ are insoluble in ethanol
$III$. Both $Li$ and $Mg$ form nitrides
$IV$. $Na_2CO_3$ gives $CO_2$ on heating

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Identify the correct statements from the following:$I$. $LiF$ is less soluble in water than $NaF$$II$. Both $LiCl$ and $MgCl_2$ are insoluble in ethanol$III$. Both $Li$ and $Mg$ form nitrides$IV$. $Na_2CO_3$ gives $CO_2$ on heating