Chemistry 1301A/B Chapter Notes - Chapter 2.1: Ionic Bonding, Chemical Polarity, Electronegativity

• School: Western University
• Department: Chemistry
• Course: Chemistry 1301A/B
• Professor: Felix Lee

Document Summary

Ionic bonding: when the difference in electronegativity is grater than 1. 9, there is a complete transfer of an electron from the atom of lower electronegativity to the atom with the higher one (ionic bond) Ionic compounds with smaller ions have larger attraction forces and higher melting points. In bonds that involve atoms with an electronegativity difference of 0. 5 or less, the sharing of electrons is approximately equal so neither charge is formed: they are called nonpolar bonds because they have no permanent dipole moments. It is important to note that these are rough guidelines for when a bond is ionic and covalent, like ki is ionic even though the difference in electronegativity is only 1. 7. Lewis structures: lewis structures show covalent bonds, paired and unpaired electrons, and any charges present, they do not account for the shape, they only take into account the valence electrons and the nuclei with which they are associated.