1. Electronic Configuration:
* Iron has an atomic number of 26, meaning it has 26 electrons.
* The electronic configuration for iron is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
2. Orbital Diagram:
* 1s: Two electrons fill the 1s orbital (represented as ↑↓).
* 2s: Two electrons fill the 2s orbital (↑↓).
* 2p: Six electrons fill the three 2p orbitals, with one electron in each orbital before pairing (↑ ↑ ↑).
* 3s: Two electrons fill the 3s orbital (↑↓).
* 3p: Six electrons fill the three 3p orbitals (↑↓ ↑↓ ↑↓).
* 4s: Two electrons fill the 4s orbital (↑↓).
* 3d: Six electrons fill the five 3d orbitals. Following Hund's rule, we fill each orbital with one electron before pairing: ↑ ↑ ↑ ↑ ↑
3. Representation:
The complete orbital diagram for Iron looks like this:
```
1s: ↑↓
2s: ↑↓
2p: ↑ ↑ ↑
3s: ↑↓
3p: ↑↓ ↑↓ ↑↓
4s: ↑↓
3d: ↑ ↑ ↑ ↑ ↑
```
Important Note: The 3d orbitals are usually represented as a box diagram with five boxes, each representing a different 3d orbital.
Let me know if you'd like me to draw the box diagram!
