Covalent bond is formed by sharing of electrons or the gain or loss of electrons?
Step 1:
The force of attraction present in the chemical compounds by which the atoms are held together in the compound is called a chemical bond.
The chemical bond is formed by the electrostatic attraction of atoms with different charges as well as electron sharing.
Step 2:
Covalent compounds are those compounds in which the atoms share one or more pairs of electrons present in their valence shells.
The atoms in covalent compounds are held together by covalent bonds.
Example: Hydrogen chloride is a covalent compound containing one chlorine atom.
Thus, the covalent bond is formed by sharing of electrons.
Step 3:
Electrovalent compounds are those compounds in which the complete transfer of electrons takes place from one atom to another atom.
These compounds contain an ionic bond between their atoms.
Example: Sodium chloride and magnesium chloride are electrovalent compounds.