Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Priyanshu kumar Best Answer
Hydrogen is the monovalent atom and Group no of Chlorine is 7. So Hybridization of Cl in HClO4 is 7+1/2 = 4 denotes sp3 according to VSEPR theory & it is Tetrahedral in shape with bond angle 109.80.