Question

Halide(s) of alkaline earth metal(s) soluble in Organic solvent(e.g.,acetone) is (are):

• A. $BeC{l}_2$
• B. $CaB{r}_2$
• C. $MgB{r}_2$
• D. $Mg{l}_2$

Answer 1

The correct option is A $BeC{l}_2$

Beryllium chloride($BeC{l}_2$) is covalent in nature due to small size and relatively high charge of $B{e}^{2+}$ ion. Hence, beryllium chloride is soluble in organic solvents such as acetone.
On the other hand the halides (except fluoride) of other alkaline earth metals are ionic in nature and they are soluble in water.
Thus, $CaB{r}_2,MgB{r}_{2}andMg{l}_2$ are soluble in water and insolublle in organic solvents such as acetone.