The valence electrons can be counted using a Lewis electron diagram as shown at the right for carbon dioxide shares four electrons with the central carbon, two (shown in red) from the oxygen itself and two (shown in black) from the carbon.
The valence electrons can be counted using a Lewis electron diagram as shown at the right for carbon dioxide shares four electrons with the central carbon (shown in red) from the oxygen itself and two (shown in black) from the carbon. The central carbon is two.