Magnetic susceptibility of a paramagnetic substance is

Options

A. 0.003
B. 0.012
C. 0.018
D. 0.0045

Answer

To solve the question regarding the magnetic susceptibility of a paramagnetic substance, we will follow these steps:

### Step 1: Understand Magnetic Susceptibility
Magnetic susceptibility (χ) is a measure of how easily a material can be magnetized when exposed to an external magnetic field. It is defined as the ratio of the intensity of magnetization (I) to the magnetic field intensity (H).

### Step 2: Write the Formula
The formula for magnetic susceptibility is given by:
\[ \chi = \frac{I}{H} \]
where:
- \( \chi \) = magnetic susceptibility
- \( I \) = intensity of magnetization
- \( H \) = magnetic field intensity

### Step 3: Characteristics of Paramagnetic Substances
Paramagnetic substances are those that are weakly attracted to magnetic fields. They have unpaired electrons, which contribute to their magnetic properties. The magnetic susceptibility of paramagnetic materials is typically positive and relatively small.

### Step 4: Identify the Value of Magnetic Susceptibility
For paramagnetic substances, the magnetic susceptibility is generally in the range of approximately \( 0.001 \) to \( 0.1 \). However, a common value often cited for many paramagnetic materials is around \( 0.012 \).

### Step 5: Conclusion
Based on the characteristics and typical values associated with paramagnetic substances, we conclude that the magnetic susceptibility of a paramagnetic substance is approximately \( 0.012 \).

### Final Answer
The magnetic susceptibility of a paramagnetic substance is approximately \( 0.012 \).

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