Explain What Is Meant by a Node (Or Nodal Plane) $\sigma$

question 30

Essay

Explain what is meant by a node (or nodal plane) in a molecular orbital and draw sketches of the following orbitals, indicating at least one nodal plane in each one.
A) a $\sigma$ * orbital
B) a $\pi$ * orbital

• A) a \(\sigma\)* orbital
• B) a \(\pi\)* orbital

---

Definitions:

Stratum Basale

The deepest layer of the epidermis where new skin cells are generated.

Melanocytes

Cells located in the skin that produce melanin, the pigment responsible for skin color.

Thick Skin

A type of skin that contains five layers and is found in areas of high abrasion, such as palms of the hands and soles of the feet, characterized by a thicker epidermis.

Keratinocyte

The predominant cell type in the outer layer of the skin, responsible for the production of keratin.