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Question

What are the types of noncovalent bonds?


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Solution

Noncovalent bond:

  1. The bond in which no sharing of electron pairs takes place is called a non-covalent bond.
  2. It occurs mostly between the macromolecules and is weaker than the covalent bond.

Types:

  1. Hydrogen bond: It is an intermolecular force that forms a dipole-dipole attraction when a Hydrogen atom bonded to an electronegative atom is present in the vicinity of an electronegative atom with a lone pair of electrons. For example, The V-bent shape of the water molecule means that slightly negative oxygens are attracted to neighboring positive hydrogen atoms.
  2. Ionic bond: It is the strongest noncovalent bond between two ionic groups of opposite charge molecules. There are two types of ionic bonds one is dipole-dipole interaction (interaction of positive and negative poles)and another is ion-dipole interaction(interaction of charged ion and polar molecule). For example, Salt is composed of a Sodium cation (Na+) and Chloride anion (Cl-)by the ionic bond.
  3. Vander Waals bond: This is the weak interaction of nonpolar molecules by the shifting of electron density.

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