Question

Why does the correct Lewis structure of CO2 involve a double bond between each of the
oxygen atoms and the carbon atom?​

Answer 1

Answer:

Carbon dioxide has a total of 16 valence electrons, 4 from carbon and 6 from each of the two oxygen atoms. In order to give the central carbon atom a complete octet, you need to form two double bonds with the two oxygen atoms. These bonds will account for 8 of the 16 valence electrons the molecule has.

Answer 2

the correct Lewis structure of CO2 involve a double bond between each of the  oxygen atoms and the carbon atom,

Carbon dioxide has a total of 16 valence electrons, 4 from carbon and 6 from each of the two oxygen atoms. In order to give the central carbon atom a complete octet, you need to form two double bonds with the two oxygen atoms. These bonds will account for 8 of the 16 valence electrons the molecule has.

For the CO2 molecule there are 2 oxygen atoms which contribute 2 electrons each, so adding the 4 electrons to the valance shells totals 8 electrons. ... The CO2 molecule has 2 double bonds so minus 2 electrons from the final total. So the overall total number of electrons should be 2, this is the electron region number.