Draw the electron dot formula for carbon dioxide, CO2. How many nonbonding electron pairs are in a carbon dioxide molecule

O=C=O.

Four nonbonding electron pairs.

Explanation:

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In this case, as you can see on the attached picture, there are two double bonds between the central carbon atom and those two oxygen atoms because each oxygen shares two electrons to the central carbon for them to attain the octet. Moreover, the enclosed dots represent the nonbonding electron pairs, which are four in total. It is importante to notice that carbon dioxide (O=C=O) has a complete octet whereas carbon monoxide (C=O) does has an incomplete octet for C.

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