Question

how many bonds can each oxygen atom of a water molecule take part in?
a one covalent bond and two hydrogen bonds
b two covalent bonds and one hydrogen bond
c two covalent bonds and two hydrogen bonds
d one covalent bond and one hydrogen bond

Explanation:

In a water molecule ($H_2O$), the oxygen atom forms two covalent bonds with two hydrogen atoms. Also, the oxygen atom has two lone - pairs of electrons which can participate in two hydrogen bonds with other water molecules.

Answer:

C. two covalent bonds and two hydrogen bonds