Strength comparison of Para/Dia-magnetism

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SUMMARY

The discussion centers on the weight comparison of SnCl3, FeCl3, TiCl3, and VCl3 in a magnetic field, specifically addressing the diamagnetic and paramagnetic properties of these compounds. The participant concluded that SnCl3 is diamagnetic, while the others are paramagnetic, with Fe3+ exhibiting strong paramagnetism due to its five unpaired electrons. The consensus indicates that paramagnetism has a more significant impact on the apparent weight of substances in a magnetic field compared to diamagnetism.

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  • Understanding of magnetic properties: diamagnetism and paramagnetism
  • Knowledge of electronic configurations of transition metal cations
  • Familiarity with the concepts of magnetic susceptibility
  • Basic principles of Chemistry Olympiad questions
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  • Research the electronic configurations of transition metals and their cations
  • Study the principles of magnetic susceptibility and its measurement
  • Explore the applications of paramagnetism in materials science
  • Investigate the effects of magnetic fields on chemical reactions
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AGNuke
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Which one of the following weighs less when weighted in magnetic field?

A>SnCl3
B>FeCl3
C>TiCl3
D>VCl3

This is the question I encountered in my Chemistry Olympiad. While I went with B, my institute published answer as A.

What I deduced is that A is diamagnetic while the rest are paramagnetic, if we look at the respective cation's electronic configuration.

If I am right, diamagnetism is the virtue of every substance and thus, it is rare to observe its effect compared to paramagnetism. I also think that Fe3+ is a good paramagnet, owing to 5 unpaired electrons.

This question poses one dilemma - which property is more profound. Obviously, whatever effect is more profound can cause the substance to react to magnetic field and give apparent weight less than actual weight. (Magnetic field supposedly set that way)
 
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You sure that A) wasn't SnCl3-?
 
No. All the species were neutral. But I don't think that diamagnetism is as profound effect as paramagnetism.
 

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