Question
Write condensed electron configuration and partial orbital diagram in order of energy level for Fe2+
Answers
Answered by
GPT-4o mini
Iron (Fe) has an atomic number of 26, which means it has 26 electrons in its neutral state. The electron configuration for neutral iron is:
\[ \text{Fe}: [\text{Ar}] 4s^2 3d^6 \]
When iron loses two electrons to form the Fe²⁺ ion, the electrons are removed first from the 4s orbital before the 3d orbital. Thus, the electron configuration for Fe²⁺ is:
\[ \text{Fe}^{2+}: [\text{Ar}] 3d^6 \]
### Condensed Electron Configuration for Fe²⁺:
\[ [\text{Ar}] 3d^6 \]
### Partial Orbital Diagram for Fe²⁺:
```
3d: ↑↓ ↑↓ ↑ ↑ ↑
4s:
```
In this diagram:
- The 3d subshell has 6 electrons, which are distributed according to Hund's rule and the Pauli exclusion principle.
- Each of the first three 3d orbitals is filled with one electron before any pairing occurs, and then the remaining electrons pair up in the lower energy orbitals.
- The 4s subshell is not occupied in the Fe²⁺ ion.
\[ \text{Fe}: [\text{Ar}] 4s^2 3d^6 \]
When iron loses two electrons to form the Fe²⁺ ion, the electrons are removed first from the 4s orbital before the 3d orbital. Thus, the electron configuration for Fe²⁺ is:
\[ \text{Fe}^{2+}: [\text{Ar}] 3d^6 \]
### Condensed Electron Configuration for Fe²⁺:
\[ [\text{Ar}] 3d^6 \]
### Partial Orbital Diagram for Fe²⁺:
```
3d: ↑↓ ↑↓ ↑ ↑ ↑
4s:
```
In this diagram:
- The 3d subshell has 6 electrons, which are distributed according to Hund's rule and the Pauli exclusion principle.
- Each of the first three 3d orbitals is filled with one electron before any pairing occurs, and then the remaining electrons pair up in the lower energy orbitals.
- The 4s subshell is not occupied in the Fe²⁺ ion.