The oxygen in this drawing has 2 lone pairs, and these are the only lone pairs in the molecule.
Work Step by Step
1. Find the amount of electrons that the atom has: An oxygen with neutral formal charge has 6 electrons on the valence shell. 2. Calculate the difference between this number and the number of bonds. 6 electrons - 2 bonds = 4 free electrons 4 free electrons = 2 lone pairs