There is an ionic bond between the perchlorate ion and the potassium. There are covalent bonds between the chlorine and oxygen atoms. There are double bonds between the chlorine and oxygen. There is a single bond between the oxygen and potassium. In this picture, replace the H with K. http://www.up.ac.za/academic/chem/mol_geom/hclo4.g...
Kclo4 Lewis Structure
covalent bond .