The bonds that link many water molecules together to form a water drop are: ionic
nuclear
covalent
hydrogen​

In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.

covalent

Explanation:

covalent bonds occur when two atoms-in this case oxygen and hydrogen share electrons with each other

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.