What is Delta Bond ?

According to Valance bond theory (VBT) by overlapping of atomic Orbitals three types of covalent bond formation take place.

(1) Sigma Bond:

(2) Pi (π)-Bond:

(3) Delta Bond:

Delta Bond: Delta bond is a special type of bond which is formed by overlapping of all the four lobes of d-orbitals except dz2 orbital.