# Physical Chemistry Doubts

These were some of the doubts that occurred to me while studying a physical chemistry book. Would be helpful if somebody enlightened me on:- 1) Ferromagnetic substances(Explain them)? 2) Spin Statistics theorem for He atom? 3) Hamiltonian operators for H atom?

Could someone post the answer. Would be helpful for others as well!!

Note by Tsar Ash
6 years, 2 months ago

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$Ferromagnetism$ -: physical phenomenon in which certain electrically uncharged materials strongly attract others. Two materials found in nature, lodestone (or magnetite, an oxide of iron, Fe3O4) and iron, have the ability to acquire such attractive powers, and they are often called natural ferromagnets. $Source >>$ this

- 6 years, 2 months ago

Hey Tsar, can you say a little more about what is confusing about you with these topics?

Staff - 6 years, 2 months ago

@josh silverman I came across these terms and I couldn't understand them so I was hoping if somehow could explain them for me.

- 6 years, 2 months ago

Have you studied quantum mechanics yet?

Staff - 6 years, 2 months ago

No. But have done structure of atoms.

- 6 years, 2 months ago

If you want to understand ferromagnetic substances, watch this video.

- 6 years, 2 months ago

At 90'c puer water has H3O+=(10)-6 mole litre-1. the value of Kw at 90'c is

- 5 years, 11 months ago