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

The question addresses the magnetic behavior of a compound whose electrons are all paired. To solve this, we need to understand the different types of magnetism:

1. Paramagnetic: This type of magnetism occurs in substances with one or more unpaired electrons. Paramagnetic materials are attracted to magnetic fields due to the presence of these unpaired electrons. Since in the provided question all electrons are paired, this option is ruled out.
2. Ferromagnetic: Substances that exhibit ferromagnetism have unpaired electrons that align parallel to each other within a region called a domain, resulting in a strong, permanent magnetism. Again, since all electrons are paired, this option is eliminated.
3. Diamagnetic: Diamagnetic substances have all their electrons paired. They are weakly repelled by a magnetic field. This repulsion is due to the induced magnetic fields in the opposite direction. This matches the condition given in the question where all electrons are paired.
4. Antiferromagnetic: These materials have unpaired electrons, but their magnetic moments are aligned in opposite directions, canceling each other out. Since the question specifies all electrons are paired, this is not applicable.

Based on these explanations, the correct answer is that the compound will exhibit Diamagnetic behavior.

Conclusion: In chemistry, diamagnetism is associated with compounds or elements where all electrons are paired. Thus, the correct answer to the question is Diamagnetic.