One remedy for a deficiency of vitamin B12 for the elderly is a regular injection of this important nutrient. The vitamin B12 injection dose depends on factors such as gender and age.
Hydrogen bonds happen in alcohols. As a matter of fact, any molecule that contains a hydrogen atom attached to an atom of nitrogen or oxygen is capable of such a bond. Ethanol is one such alcohol that features hydrogen bonds. Ammonia is an example of hydrogen bonding. In the case of ammonia, however, the hydrogen bond happens to be relatively weak.
A special type of intermolecular force exists between water  molecules called hydrogen bonding which raises its boiling point  significantly with respect to its isovalent hoâ¦mologs. Hydrogen is  unique among the elements because it has a single electron which is  also a valence electron.