Question

question 13
in a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by ...
hydrogen bonds
nonpolar covalent bonds
polar covalent bonds
ionic bonds
van der waals interactions

Explanation:

In a water molecule ($H_2O$), oxygen is more electronegative than hydrogen. The shared electrons in the $O - H$ bonds are pulled closer to the oxygen atom, creating a polar - covalent bond. Hydrogen bonds occur between different water molecules, not within a single water molecule. Non - polar covalent bonds have equal sharing of electrons, which is not the case in $H_2O$. Ionic bonds involve the transfer of electrons, and van der Waals interactions are weak intermolecular forces.

Answer:

C. polar covalent bonds