A bond with maximum covalent character between non-metallic elements is formed:
A. Between atoms of same size
B. Between identical atoms
C. Between chemically similar atoms
D. Between atoms which widely differ in their electronegativities

Hint:
We know that the covalent bond can generally be explained by the sharing of two or more than two electrons in an atom or chemical compound. The covalent bond is usually famous as a molecular bond.

Complete step by step solution
As we all know, the sharing of the electron comes under the category of the covalent bond. The electrons which are shared in a covalent bond are termed as bonding pairs or shared pairs. In the covalent bonding, the stable attraction or repulsion forces act between the participating orbitals. In the sharing of electrons, the main four atomic orbitals are responsible. These atomic orbitals are ${\rm{s,p,d}}$ and ${\rm{f}}$. Thus, a bond with the maximum covalent character between non-metallic elements is generally formed between identical atoms.

Hence, the correct option for this question is B that is between identical atoms.

Note:
The identical atoms are the same in every phase like chemically or physically. So, we can say that each element which is made up of any identical particles of the existing matter is derived as atoms.