The order of covalent character of $KF, KCl, KI$ is

Arrange the following in the decreasing order of their covalent character:
$(A)$ $LiCl$ $(B)$ $NaCl$ $(C)$ $KCl$ $(D)$ $CsCl$
Choose the most appropriate answer from the options given below.

State $Fajans$ rules for the partial covalent character of ionic bonds.

The correct sequence of increasing covalent character is represented by

Which one is the highest melting halide?

Highest covalent character is found in which of the following?