Which group 2 element has the highest lattice energy in its chloride compound?
Lattice energy increases with smaller cation size and higher charge density. BeCl₂ (Be²⁺, smallest) has the highest lattice energy among Be, Mg, Ca, and Sr chlorides.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Nomenclature of Elements with Atomic Number >100
