6.6 Polar covalent bonds result from an uneven sharing ofelectrons What is the distribution of a shared pair of electrons in H: H:HH a covalent bond? In hf the shared electrons are drawn more close to f In H2, evenly shared atom. so the fluorine side : of bond is electrically negative while the H: F:HF hydrogen side of bond is electrically positive. This kind of charge separation is called a dipole(偶极) in hf unevenly shared
6.6 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
The ability to draw bonding electrons is decided by the atom s electronegativity(电负性) Increasing electronegativity 1A 8A 2A 3A 4A 5A 6A 7A a1.0 BCNO F 2.0253 3.0 3.54.0 翌 3B 4B 5B 6B 7B B 1B 2B 閻2間 画 v Cr Mn Fe Co NI Cu 1616151819 1919 岛刭鹦盟劉翌删别盟删删盟□ 岛口了
The ability to draw bonding electrons is decided by the atom’s electronegativity (电负性)