Question

What is a single covalent bond and why does it form?

Answer 1

Generally all the atoms in a molecule are going to stay together with different types of bonds. The different types of bonds are ionic bond, covalent bond and coordinate covalent bond. The type of bond is going to depend on the nature of the atoms.

Complete answer:
- In the question it is asked about the single covalent bond and why it is going to form.
- If the atoms in a molecule are going to have high electronegativity difference means a difference of electronegativity of >2.7, then the formed bond between the atoms in the respective molecule is an ionic bond.
- If the atoms in a molecule are going to have less electronegativity difference means < 2.7, then the formed bond will be covalent bond.
- In a single covalent bond the sharing of electrons is going to take place between the atoms of the molecules.
- The covalent bond is going to form by sharing electrons only between the atoms.
- There are different types of covalent bonds and they are sigma bond and pi bond.
- Sigma bond is going to be formed by the axial overlapping of the atomic orbitals and pi-bond is going to be formed by the sidewise overlapping of the atomic orbitals.

Note:
There are three types of covalent bonds and they are single covalent bond, double covalent bond and triple covalent bond. In a single covalent bond only one covalent bond that too sigma bond only exists. In double bond one sigma and one pi-bond are going to be present. In triple bonds there is one sigma bond and two pi bonds.