Coordination Number Last updated Feb 28, 2022 Save as PDF Constitutionally Heterotopic Cope Elimination Page ID39382 Gamini GunawardenaUtah Valley University ( \newcommand{\kernel}{\mathrm{null}\,}\) Coordination number of an atom in an organic molecule is the number of atoms directly bonded to it. For example, in 1 the coordination number of the carbon atom is four and that of the oxygen atom is two. Template:HideTOC