Q.
A. BeCl2 < MgCl2 < CaCl2 < BaCl2
B. BeCl2 < MgCl2 < BaCl2 < CaCl2
C. BeCl2 < BaCl2 < MgCl2 < CaCl2
D. BaCl2 < CaCl2 < MgCl2 < BeCl2
E. None of the above
Correct choice: A
Explanation: