Question

Which one of the following statements about water is false?
(A) Ice formed by heavy water sinks in normal water
(B) Water is oxidized to oxygen during photosynthesis
(C) Water can act both as an acid and as a base
(D) There is extensive intermolecular hydrogen bonding in the condensed phase

Answer 1

Chemical bonding is divided into four main types and they are: Ionic Bonds, Covalent Bonds, Hydrogen Bonds, and van der Waals force. These bonds or forces play an important role in biochemical reactions. The main difference among these is their bond strength. Covalent, Ionic, Hydrogen, and van der Waals are in the order of strongest to least.

Complete answer:
Hydrogen bonding is one of the many important bonds in chemical processes. Hydrogen bonding holds the responsibility for water's unique solvent properties. Hydrogen bonding is responsible for finding the three-dimensional structure of proteins including enzymes and antibodies.
One water molecule contains two hydrogen atoms and an oxygen atom where the hydrogen atoms are bonded to an oxygen atom, and its structure is bent. This is due to the fact that the oxygen atom carries two pairs of unshared electrons along with the formation of bonds with hydrogen atoms. All of the electron pairs that are shared repel one another.
Ionic and covalent bonding are the two kinds of bonding that are usually found in substances. An ionic bond is formed by the sharing of valence electrons between atoms. A covalent bond is formed by atoms sharing their valence electrons with one another.

Note:
The hydrogen bond in a molecule of water is a dynamic attractive force between neighboring water molecules demanding one hydrogen atom located between the two oxygen atoms. Hydrogen bonds are formed in water as the hydrogen atoms of one water molecule are attracted towards the oxygen atom of a neighboring water molecule.