# How many dipoles are there in a water molecule?

Nov 8, 2014

There are three dipoles in a water molecule.

Since O is more electronegative than H, the O-H bond is polar.

The negative end is at the O atom, and the positive end is at the H atom. There are two O-H bonds, so there are two bond dipoles.

These two bond dipoles are vectors. They combine to form a vector sum with the resultant pointing from the mid-point between the H atoms to the O atom.

This resultant is the molecular dipole.

Two bond dipoles plus a molecular dipole make three dipoles.

Nov 8, 2014

There are three dipoles in a water molecule.

Since O is more electronegative than H, the O-H bond is polar.

The negative end is at the O atom, and the positive end is at the H atom. There are two O-H bonds, so there are two bond dipoles.

These two bond dipoles are vectors. They combine to form a vector sum with the resultant pointing from the mid-point between the H atoms to the O atom.

This resultant is the molecular dipole.

Two bond dipoles plus a molecular dipole make three dipoles.

Nov 8, 2014

There are three dipoles in a water molecule.

Since O is more electronegative than H, the O-H bond is polar.

The negative end is at the O atom, and the positive end is at the H atom. There are two O-H bonds, so there are two bond dipoles.

These two bond dipoles are vectors. They combine to form a vector sum with the resultant pointing from the mid-point between the H atoms to the O atom.

This resultant is the molecular dipole.

Two bond dipoles plus a molecular dipole make three dipoles.