Which of the following chlorides has the highest covalent character?
Covalent character increases with higher charge and smaller cation size (Fajans’ rule). BeCl₂ (Be²⁺, small) has the highest covalent character among group 2 chlorides.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Genesis of Periodic Classification - Dobereiner Newlands Mendeleev
