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.