Question

Name the physical property that is not affected by hydrogen bonding.

Answer 1

We know that elements having a very high electronegativity possess the ability to form hydrogen bonds. In order to solve this question, look at the compounds given in the question and check if it is made of a highly electronegative element.

Complete answer:
Hydrogen bond is defined as the attractive force which binds the hydrogen atom of a molecule with the electronegative atom of another molecule. Electronegativity of an element is defined as the ability of an atom in a chemical compound to attract a shared pair of electrons towards itself. Only three elements of the modern periodic table form hydrogen bonds –Oxygen, Nitrogen and Fluorine. It is formed when a hydrogen atom is in between the two highly electronegative atoms present within the same molecule. For example $\text{ }H$-bond between two oxygen atoms in o-nitrophenol.
Hydrogen bonding is an electrostatic dipole to dipole interaction between molecules, whereas it also has some features of covalent bonding. Hydrogen bonding is directional and strong, produces shorter interatomic distances, and usually involves a limited number of interaction partners. The electronegativity of an atom is not affected by hydrogen bond but it affects the formation of hydrogen bond.

Additional Information: Hydrogen bonds are generally stronger than ordinary dipole-dipole and dispersion forces, but weaker than true covalent and ionic bonds. Hydrogen atoms bonds are known as the weak hydrogen bonds to elements such as chlorine and sulphur can serve as a donor, particularly when the carbon or one of its neighbors is electronegative.

Note:
Remember that Hydrogen bonds are of two types – Intermolecular Hydrogen bonds. It is formed between two different molecules of the same or different compounds. For example $\text{ }H$-bond in case of water molecules.