what is the electron configuration for Ti
The Correct Answer and Explanation is:
The electron configuration for titanium (Ti), which has an atomic number of 22, is:
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d²
Explanation:
Titanium’s atomic number of 22 means that it has 22 electrons. To determine its electron configuration, we follow the order of orbital filling based on the Aufbau principle, the Pauli exclusion principle, and Hund’s rule.
- 1s²: The first two electrons fill the 1s orbital (the closest orbital to the nucleus).
- 2s²: The next two electrons fill the 2s orbital.
- 2p⁶: The next six electrons go into the 2p orbital. Since the p orbitals can hold up to six electrons, this completes the second energy level.
- 3s²: The next two electrons fill the 3s orbital.
- 3p⁶: The next six electrons fill the 3p orbital, completing the third energy level.
- 4s²: The next two electrons go into the 4s orbital. Although the 3d orbital can hold electrons, the 4s orbital is lower in energy and gets filled first.
- 3d²: Finally, the last two electrons fill the 3d orbital, which completes the electron configuration for titanium.
This configuration shows that titanium has two electrons in the 4s orbital and two electrons in the 3d orbital, with the rest of the orbitals filled according to the rules of orbital filling.
Key Points:
- Titanium’s electron configuration reflects its position in the periodic table. It is a transition metal, hence the 3d² electrons.
- The 4s orbital is filled before the 3d orbital due to the energy levels of these orbitals at the time of electron filling.
This configuration is essential for understanding titanium’s chemical properties, including its ability to form bonds and its metallic characteristics.
