<P> The valence electrons can be counted using a Lewis electron dot diagram as shown at the right for carbon dioxide . The electrons shared by the two atoms in a covalent bond are counted twice , once for each atom . In carbon dioxide each oxygen shares four electrons with the central carbon , two ( shown in red ) from the oxygen itself and two ( shown in black ) from the carbon . All four of these electrons are counted in both the carbon octet and the oxygen octet . </P>
<P> The valence electrons can be counted using a Lewis electron dot diagram as shown at the right for carbon dioxide . The electrons shared by the two atoms in a covalent bond are counted twice , once for each atom . In carbon dioxide each oxygen shares four electrons with the central carbon , two ( shown in red ) from the oxygen itself and two ( shown in black ) from the carbon . All four of these electrons are counted in both the carbon octet and the oxygen octet . </P>
how does one determine the number of valence electrons an atom has
how does one determine the number of valence electrons an atom has
counted using a Lewis electron dot diagram
counted using a Lewis electron dot diagram