The incorrect statement regarding molecular orbital (s) is :

Options

A. If there is a nodal plane perpendicular to the intermoleculear axis and lying between the nuclei of bonded atoms then corresponding orbitals is antibonding M.O.
B. If a nodal plane lies in the inter-nuclear axis, then corresponing orbitals is (pi) bonding M.O.
C. The `sigma`- bonding molecular orbital does not contain nodal planes containing the internuclear axis
D. The `delta`-bonding molecular orbitals possesses three nodal planes containing the internuclear axis

Answer

To solve the question regarding the incorrect statement about molecular orbitals, we will analyze each option based on the characteristics of different types of molecular orbitals.

### Step-by-Step Solution:

1. **Understanding Molecular Orbitals**:
- Molecular orbitals are formed by the combination of atomic orbitals when atoms bond together. They can be classified into bonding and anti-bonding orbitals based on their stability and nodal planes.

2. **Analyzing Each Option**:
- **Option A**: "If there is a nodal plane perpendicular to the inter-nuclear axis and lying between the nuclei of bonded atoms, then the corresponding orbital is an anti-bonding molecular orbital."
- This statement is **correct**. Anti-bonding molecular orbitals have a nodal plane that is perpendicular to the inter-nuclear axis.

- **Option B**: "If a nodal plane lies in the inter-nuclear axis, then the corresponding orbital is a pi-bonding molecular orbital."
- This statement is **correct**. Pi-bonding molecular orbitals contain one nodal plane that lies along the inter-nuclear axis.

- **Option C**: "The sigma-bonding molecular orbital does not contain nodal planes containing the inter-nuclear axis."
- This statement is **correct**. Sigma-bonding molecular orbitals do not have any nodal planes along the inter-nuclear axis.

- **Option D**: "The delta-bonding molecular orbital possesses three nodal planes containing the inter-nuclear axis."
- This statement is **incorrect**. Delta-bonding molecular orbitals have only two nodal planes: one in the inter-nuclear axis and another perpendicular to it.

3. **Conclusion**:
- The incorrect statement regarding molecular orbitals is **Option D**, which claims that delta-bonding molecular orbitals possess three nodal planes.

### Final Answer:
The incorrect statement regarding molecular orbitals is **Option D**.