Which pair of elements would form a bond with the greatest polarity?

Sulfur (S) and oxygen (O) will form a bond with the greatest polarity because they have the least difference in electronegativity, thus, forming a polar covalent bond.

Fluorine (F) and carbon (C) will form a bond with the greatest polarity because the two nonmetals have the greatest difference in electronegativity, thus forming a polar covalent compound.

Hydrogen (H) and oxygen (O) will form a bond with the greatest polarity because the two nonmetals have the greatest difference in electronegativity, thus forming an ionic compound.

Cesium (Cs) and fluorine (F) will form a bond with the greatest polarity because the metal and nonmetal have the greatest difference in electronegativity, thus forming an ionic compound.