Ncert Exercises & Solutions

Some of the Group 2 metal halides are covalent and soluble in organic solvents. Among the following metal halides, the one which is soluble in ethanol is

1. BeCl₂

2. MgCl₂

3. CaCl₂

4. SrCl₂

Hint: Follow like dissolve like the concept, covalent compound dissolve in covalent solvent

Ethanol is an organic compound i.e., of covalent character "Like dissolves like". To dissolve in ethanol the compound should have a more covalent character.

Beryllium halides have a covalent character due to their small size and high effective nuclear charge. Hence, BeCl₂ is most covalent among all other chlorides.

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