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)

Be

Answer 2

: Baryllium halides are covalent in nature. This is due to small size and high charge of $Be^{2 +}$ ion i.e., it has high polarizing power. However, the halides of the other alkaline earth metals (fluorides, chlorides, bromides and iodides) are ionic solids.