Final answer:
The electron configuration of the oxygen atom is 1s² 2s² 2px² 2py¹ 2pz¹. There are 2 unpaired electrons present.
Step-by-step explanation:
The electron configuration of the oxygen atom is 1s² 2s² 2px² 2py¹ 2pz¹. To determine the number of unpaired electrons, we look at the orbitals with only one electron. In this case, the 2py and 2pz orbitals each have one electron, so there are 2 unpaired electrons present.