Question

What are the various types of chemical bonds, the circumstances under which each forms, and the relative strengths of each type?

Answer 1

There are three types of chemical bonds:

Ionic bonds, covalent bonds and hydrogen bonds.

Ionic bonds are formed by positively and negatively charged ions by mutual attraction of opposite charges. Ions are formed when an atom losses or gains one or more electrons. Ionic bonds are stronger than covalent bonds.

Covalent bonds are formed by sharing of one or more pair of electrons between two atoms. There are two types of covalant bonds:

nonpolar covalent bonds: electrons are shared equally between atoms.

polar covalent bonds: electrons are shared inequally between the atoms due to different in polarity of atoms.

Hydrogen bonds are formed when an atom in a molecule interacts weakly with a hydrogen atom already taking part in a polar covalent bond. Individual hydrogen bonds are weak and can be easily broken.