In water molecule oxygen is

The correct answer is sp3-hybridized.

Key Points

• Hybridization: 
  • Hybridization is the process of combining two atomic orbitals to form hybrid orbital in a molecule.
  • sp Hybridisation:
    • When one ‘s’ orbital and one ‘p’ orbitals of an atom mix to form two new equivalent orbitals.
  • sp2 Hybridisation:
    • When one ‘s’ orbital and two ‘p’ orbitals of an atom mix to form 3 equivalent orbitals.
  • sp3 Hybridisation:
    • When one ‘s’ orbital and three ‘p’ orbitals of an atom mix together to form four new equivalent orbital

EXPLANATION:

• Oxygen has six valence electrons: Two hydrogens will make 2 sigma bonds and the rest 4 electrons will go in lone pairs. Hence effectively, there are 4 bonds, which gives hybridization as sp3. Therefore option 3 is correct.