Paramagnetic vs Diamagnetic - Paired vs Unpaired Electrons - Electron Configuration

TL;DR

Learn how to identify if a substance is paramagnetic or diamagnetic based on its electron configuration.

Transcript

in this video we're going to focus on identifying substances as being paramagnetic or diamagnetic what you need to know is that if it's paramagnetic it contains unpaired electrons now if it doesn't have any unpaired electrons is diamagnetic so let's go through some examples magnesium is it paramagnetic or is it diamagnetic so what we need to do is ... Read More

Key Insights

• ❓ Paramagnetic substances contain unpaired electrons, while diamagnetic substances have all electrons paired.
• 🪈 The electron configuration can be determined by writing the electron orbitals in the correct order.
• ⌛ Hund's rule states that when filling degenerate orbitals, electrons should be added one at a time with parallel spins.
• 💄 Nickel has two unpaired electrons, making it paramagnetic.
• ❓ Zinc is diamagnetic, as all of its electrons are paired.

Questions & Answers

Q: How can the electron configuration of an element be determined?

The electron configuration of an element can be determined by writing the electron orbitals up to the atomic number, following the order of s, p, d, and f sublevels.

Q: What is the difference between paramagnetic and diamagnetic substances?

Paramagnetic substances contain unpaired electrons, making them weakly attracted to an external magnetic field. Diamagnetic substances, on the other hand, do not have any unpaired electrons and are weakly repelled by an external magnetic field.

Q: How can you identify if an element is paramagnetic or diamagnetic?

By examining the electron configuration, if there are any unpaired electrons, the substance is paramagnetic. If all electrons are paired, the substance is diamagnetic.

Q: Can the number of paired and unpaired electrons in an element be determined without counting them?

Yes, by knowing the total number of electrons in a neutral atom, you can subtract the number of unpaired electrons to find the number of paired electrons.

Summary & Key Takeaways

• Paramagnetic substances contain unpaired electrons, while diamagnetic substances do not.

• The electron configuration of an element can be determined by writing the electron orbitals up to the atomic number.

• Paramagnetic substances are weakly attracted to an external magnetic field, while diamagnetic substances are weakly repelled by an external magnetic field.