Question

Of the metals $Be,Mg,Ca$ and $Sr$ of group $2$ in the periodic table, the least ionic chloride will be formed by:

• A. Be
• B. Ca
• C. Mg
• D. Sr

Answer 1

Answer: (A)

Beryllium halides are covalent in nature due to its small size and high charge of $B{e}^{2+}$ ion, i.e., high polarising power. While the halide of other alkaline earth metals are ionic in nature.