Here's how to construct the orbital diagram for berkelium (Bk), which has an atomic number of 97:

1. Electron Configuration

The electron configuration for berkelium is:

* [Rn] 5f⁹ 7s²

2. Orbital Diagram

* [Rn]: The [Rn] represents the filled electron configuration of radon, which has 86 electrons.

* 5f⁹: The 5f subshell has 7 orbitals, each capable of holding 2 electrons. You'll fill 9 electrons in these orbitals, following Hund's rule (each orbital gets one electron before any orbital gets a second).

* 7s²: The 7s subshell has one orbital, which holds 2 electrons.

3. Visual Representation

Here's a simple visual representation of the orbital diagram, where arrows represent electrons, and each box represents an orbital:

```

5f: ↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑

7s: ↑↓

```

Key Points

* Hund's Rule: Electrons will individually occupy each orbital within a subshell before doubling up in any one orbital.

* Pauli Exclusion Principle: No two electrons in an atom can have the same set of four quantum numbers. This means each orbital can hold a maximum of two electrons with opposite spins.

Let me know if you'd like a more detailed breakdown of any specific orbital or aspect of the electron configuration!