# Identify the correct order in which the covalent radius of the following elements increases ? $(I)\;Ti; \; (II)\;Ca ; \; (III)\;Sc$

$(a)\;I,II,III \\(b)\;II,I,III \\ (c)\;I,III,II \\ (d)\;III,II,I$

The correct order is :$Ti,Sc,Ca$
$I,III,II$ is correct
Hence c is the correct answer.