Langevin Paramagnetism Classical Approach

This is known as the Curie law of paramagnetism and C = is the Curie constant 

What materials would be expected to exhibit paramagnetism Even-numbered elements will always have electrons in pairs hence, their magnetic moments will cancel each other. Odd-numbered elements, could have unpaired electrons, but generally this odd electron has formed either an ionic or covalent bond to form a full shell in which the electron pairs 

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