ENGR 1A Lecture Notes - Lecture 22: Valence Bond Theory, Orbital Hybridisation, Atomic Orbital

• School: UC-Irvine
• Department: Engineering
• Course: ENGR 1A
• Professor: Alon Gorodetsky

Document Summary

Bond order = number of shared pairs in all x y bonds. The number of bonding electron pairs shared by two atoms in a molecule number of x y links in the molecule or ion. The distance between the nuclei of two bonded atoms. Related to the atomic size and the order of the bond. When the bond order equals 2 (or greater) there are two (or more) electron pairs being shared between atoms, and the length of the bond is shorter. The enthalpy change for breaking a bond in a molecule. Bond properties: order with the reactants and the products in the gas phase. Related to the order of the bond. Always a positive quantity because energy is absorbed. Orbitals overlap to form a bond between two atoms. Two electrons (of opposite spin) can be accomodated in the overlapping orbitals. One electron is usually supplied by each of the two bonded atoms.