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Which of the following is true? (A) Diamagnetism is temperature dependent (B) Paramagnetism is temperature dependent (C) Paramagnetism is temperature independent (D) None of the above

Short Answer

Expert verified
(B) Paramagnetism is temperature dependent.

Step by step solution

01

Statement A: Diamagnetism is temperature dependent

Diamagnetism occurs in materials where there are no unpaired electrons, and all atomic magnetic moments are paired. It is a weak, negative response to an applied magnetic field. The induced magnetization is independent of temperature. In this case, Statement A is false.
02

Statement B: Paramagnetism is temperature dependent

Paramagnetism occurs in materials with unpaired electrons, and their atomic magnetic moments are aligned parallel to an applied magnetic field. The susceptibility of a paramagnetic material (the degree to which it responds to a magnetic field) is inversely proportional to its temperature (Curie's Law). Therefore, the paramagnetic response decreases as the temperature increases. In this case, Statement B is true.
03

Statement C: Paramagnetism is temperature independent

This statement directly contradicts Statement B, which we have already determined to be true. As the paramagnetic susceptibility is inversely proportional to temperature, the paramagnetic property is not temperature-independent. Thus, Statement C is false.
04

Statement D: None of the above

Since Statement B is true, Statement D indicating that none of the statements are true is false. Based on our analysis, the correct answer is: (B) Paramagnetism is temperature dependent.

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