Classify the bonds formed between each pair as ionic, polar covalent, or nonpolar covalent based solely on each element's position on the periodic table.
you have to find the differences of electronegativity for the atoms joined by the bond. if their diff is <0.4, then it's non-polar
if it's between 0.4 to 1.7 then it's polar
1.7 and up it's ionic
Electronegativity values can be found on most periodic tables.
