Abnormal Electronic Configuration of Cr and Cu - D and F Block Elements - Chemistry Class 12

TL;DR

Chromium and copper exhibit abnormal electronic configurations due to energy level differences, leading to stable configurations.

Transcript

click the bell icon to get latest videos from akira Halfords in the previous section we have discussed about the electronic configuration of d-block elements in that case we have got to know that is the chromium and the copper this are the two elements which show the abnormal electronic configuration so why they exhibit abnormal electronic configur... Read More

Key Insights

• 🎚️ Chromium and copper exhibit abnormal electronic configurations due to energy level differences in their S and D orbitals.
• 🥺 Degeneracy in D orbitals allows for more electrons to be accommodated, leading to stable configurations.
• 🇨🇭 Shifting electrons between S and D orbitals results in the observed abnormal electronic configurations in chromium and copper.
• 😄 Stable configurations in D orbitals contribute to the overall stability of elements like chromium and copper.
• 🖐️ Energy level differences play a crucial role in determining the electronic configurations of elements.
• 😄 Half-filled or completely filled D orbitals are considered stable due to the stability principle governing electron arrangements.
• 🆘 Observing electron shifts between orbitals helps understand the abnormal electronic configurations in certain elements.

Questions & Answers

Q: Why do chromium and copper exhibit abnormal electronic configurations?

Chromium and copper exhibit abnormal electronic configurations due to the energy level differences between their S and D orbitals. This causes electrons to be shifted to achieve stable configurations.

Q: How does degeneracy in D orbitals contribute to abnormal electronic configurations?

Degeneracy in D orbitals allows for more electrons to be accommodated, leading to stable electronic configurations as observed in chromium and copper.

Q: Why are half-filled or completely filled D orbitals considered stable?

Half-filled or completely filled D orbitals are considered stable because they follow the stability principle, resulting in more stable electronic configurations for elements like chromium and copper.

Q: What role does energy level difference play in determining electronic configurations?

Energy level differences in orbitals like S and D influence the distribution of electrons, allowing for shifts to achieve stable configurations in elements like chromium and copper.

Summary & Key Takeaways

• Chromium and copper show abnormal electronic configurations due to energy level differences in their D orbitals.

• The D orbitals can accommodate more electrons due to degeneracy, allowing for stable configurations.

• Shifting electrons between S and D orbitals leads to the observed abnormal configurations.