Which statement explains why a C–O bond is

more polar than a F–O bond?

(1) At STP, carbon has a greater density than

fluorine.

(2) A carbon atom has more valence electrons

than a fluorine atom.

(3) The difference in electronegativity between

carbon and oxygen is greater than that

between fluorine and oxygen.

(4) The difference in first ionization energy

between carbon and oxygen is greater than

that between fluorine and oxygen.