The bond which is form by the linear (head on) overlap is called ____?

The bond which is form by the linear (head on) overlap is called ____?

لکیری (سر آن) اوورلیپ کے ذریعہ جس بانڈ کی شکل ہے اسے ____ کہا جاتا ہے؟
Explanation

A sigma (σ) bond is formed by the head-on (linear) overlap of atomic orbitals.

It is the strongest type of covalent bond and exists in single bonds.