CHEM 130 Lecture Notes - Lecture 27: Bond Order, Bond Length, Covalent Bond
Document Summary
Chem 130: general chemistry: macroscopic investigations and reaction principles - The distance between the nuclei in a bond. Usually bond lengths for covalent single bonds in compounds can be predicted from covalent radii. Covalent radii are the values assigned to atoms in such a way that the sum of covalent radii of atoms a and b predicts an approximate a-b bond length. The number of paired electrons in a bond. C:c has a bond order of one. C::c has a bond order of two. As the bond order increases, the bond strength increases and the nuclei are pulled inward, decreasing the bond length. The energy required to break a particular bond in molecule. The measure of the strength of a particular bond. The larger the bond energy, the stronger the chemical bond. The average enthalpy change for the breaking of an a-b bond in a molecule in the gas phase.
