Does the carbon dioxide molecule contains two double bonds?

Answer 1

Yes, carbon dioxide has two double bonds. This can be determined one of two ways:

By using the octet rule. The total number of valence electrons in a carbon atom and two oxygen atoms is 16. Since atoms in this area of the Periodic Table tend to bond such that they are in contact with eight electrons, the only reasonable (non-cyclic) way for this to occur is with each oxygen having two lone pairs and being double bonded to the carbon. It would look like this (electron pairs not shown due to formatting restrictions): O=C=O.

The other, more reliable way to determine the order of a bond is to draw a molecular orbital diagram. Although it is slightly more complicated, it is never misleading, as the octet rule sometimes is. In the molecular orbital diagram for carbon dioxide, one can ignore the 1s orbitals, and focus only on the 2s and 2p atomic orbitals. They give rise to four bonding molecular orbitals that are filled with electrons. Dividing the bond order by the number of bonds gives the bond order for each bond: two.
Yes...CO2....Carbon atoms make four bonds each, Oxygen makes 2 bonds each to there is a double bond between each atom of Oxygen and the one atom of Carbon.

O=C=O

Answer 2

No, the carbon dioxide molecule contains two double bonds between the carbon atom and each oxygen atom. This gives it a linear shape with each oxygen atom on opposite sides of the carbon atom.