A bond that is principally ionic will form between

Question

Quizplus · Accepted Answer

Ionic bonds form between atoms with a large difference in electronegativity. Potassium has a low electronegativity, while fluorine has a high electronegativity. Therefore, a bond between potassium and fluorine will be mainly ionic.

A) sulfur and hydrogen have relatively similar electronegativities, and so would not form a principally ionic bond. 
B) phosphorus and sulfur have similar electronegativities and would also not form a principally ionic bond. 
C) chlorine and iodine have relatively similar electronegativities, and so would not form a principally ionic bond.

A Bond That Is Principally Ionic Will Form Between