What type of orbital overlap is responsible for the π bond between carbon and oxygen in the molecule below? g?

Answer is: p orbital overlap is responsible for the π bond between carbon and oxygen.

Electron configuration of carbon and oxygen:

₆C 1s² 2s² 2p².

₈O 1s² 2s² 2p⁴.

Carbon atom is sp2 hybridized, it has three sp2 orbitals and one p orbital, they form four bonds.

Oxygen has two p orbitals, that form two bonds (one sigma and one pi bond).

p orbitals from carbon and oxygen overlap and form pi bond.