CHEM 1030 Lecture : Concepts of Chemical Bonding

• School: Auburn University
• Department: Chemistry
• Course: CHEM 1030
• Professor: Marla Spergel

Document Summary

Chemical bonds: three basic types of bonds. Metallic - metal atoms bonded to several other atoms. Lattice energy: this third piece of the puzzle is the lattice energy: In covalent bonds atoms share electrons: there are several electrostatic interactions in these bonds: Polar covalent bonds: though atoms often form compounds by sharing electrons, the electrons are not always shared equally. Electronegativity: electronegativity is the ability of atoms in a molecule to attract electrons to themselves, on the periodic chart, electronegativity increases as you go . From left to right across a row. From the bottom to the top of a column. Polar covalent bonds: when two atoms share electrons unequally, a bond dipole results, the dipole moment, , produced by two equal but opposite charges separated by a distance, r, is calculated: It is measured in debyes (d): the greater the difference in electronegativity, the more polar is the bond.