Question

The magnetic behavior of a compound with all electrons paired is:

• A. Paramagnetic
• B. Ferromagnetic
• C. Diamagnetic
• D. Antiferromagnetic

Hint:

A quick check for magnetic properties:
Count total electrons. If the number is even, it's usually diamagnetic (except for \( B_2 \) and \( O_2 \) according to MOT).
If the number is odd, it's always paramagnetic.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Magnetism in materials arises from the orbital and spin motion of electrons.
The way a material reacts to an external magnetic field depends on its electronic configuration.
Step 2: Detailed Explanation:
- Paramagnetism: Occurs in compounds with one or more unpaired electrons. These materials are weakly attracted by a magnetic field.
- Ferromagnetism: Occurs when domains of unpaired electron spins align in the same direction, resulting in strong permanent magnetism.
- Diamagnetism: Occurs in compounds where all electrons are paired. In these atoms, the magnetic moments of the electrons cancel each other out. These materials are weakly repelled by a magnetic field.
- Antiferromagnetism: Occurs when adjacent spins point in opposite directions, canceling out the overall magnetic moment.
Step 3: Final Answer:
A compound with all its electrons paired exhibits diamagnetic behavior.