6.6 Polar covalent bonds result from an uneven sharing ofelectrons What is the distribution of a ∴t, Shared pair of electrons in a covalent bond? H: H In hf the shared electrons are drawn more close to f In H,, evenly shared atom. so the fluorine side of bond is electrically H:F=了 、,单 negative while the hydrogen side of bond is electrically positive. This kind of charge separation is called a dipole(偶极 in HF, unevenly shared6.6 Polar covalent bonds result from an uneven sharing of electrons What is the distribution of a shared pair of electrons in a covalent bond? In HF the shared electrons are drawn more close to F atom, so the fluorine side of bond is electrically negative while the hydrogen side of bond is electrically positive. This kind of charge separation is called a dipole (偶极). In H2 , evenly shared in HF, unevenly shared