Water molecules are isolated in its vapour form.
Water has polar molecules in all its form but when water becomes vapour its molecules became isolated. Their bond angles were bent at 105 degree. All the negative charges that is produced in water’s boiling point started concentrating the oxygen molecules and the positives were concentrating the hydrogen molecules.
However, the protons were partially positively charged. The electrons become 10 times greater near the oxygen than hydrogen.
d. it forms lighter atoms changing them into gasses instead of a liquid