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What is the reason for the magnetic moment of a diamagnetic atom being zero?

1. Diamagnetic materials lack unpaired electrons and become magnetized in a direction opposite to the applied magnetic field. As a result, they are repelled by the poles of a bar magnet when brought near.
2. The Curie temperature is the point at which a ferromagnetic material transitions to a paramagnetic state.
3. Above the Curie temperature, ferromagnetic materials exhibit behavior similar to paramagnetic substances.
4. The magnetic dipole moment of a diamagnetic material is zero because all its electron pairs have opposite spins, canceling each other out, i.e., μp = 0.

Correct answer: The magnetic dipole moment of a diamagnetic material is zero because all its electron pairs have opposite spins, canceling each other out, i.e., μp = 0.

Solution

Diamagnetic materials have paired electrons with opposite spins, resulting in a net magnetic dipole moment of zero. This makes option D correct.

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