Questions tagged [magnetism]
For questions about determining the paramagnetism, diamagnetism, etc. of chemical species and other chemical applications of magnetism. Note that questions oriented towards physical aspects of electromagnetism are off-topic on this site.
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Paramagnetic liquids at room temperature
So as most inorganic liquids are diamagnetic at room temperature (like water), what are some applications to paramagnetic liquids at room temperature?
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What's the current of an aromatic ring?
Aromatic molecules like benzene have a ring current, created by the movement of electrons around the ring. This is most visible during proton NMR, when the magnetic field of the ring current opposes ...
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Why does s and p orbitals dont contribute to para or ferromagnetism? [closed]
Like in metal Ag,contains unpaired electron in their s subshell and like Cl has unpaired electron in its p subshell,but they all show diamagnetism,what can be the reason for this?
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Magnetic moment of an electron not parallel to its angular momentum?
For the total angular momentum of an electron $\vec{J} = \vec{L} + \vec{S}$, we're often shown a picture like this
where I assume that the $\vec{L}$ and $\vec{S}$ cones are centred on the $J$ axis ...
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Why are fluorine-19 NMR spectra less affected by paramagnetic centers than other common nuclei?
I know that 19F NMR spectra are less sensitive to paramagnetic centers as an empirical fact: it’s my experience and that’s what people in my lab have always been saying.
For instance, some of my ...
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Why are ions in a mass spectrometer accelerated through electric plates? [closed]
I was reading an article on the AP Chemistry course in Khan Academy about mass spectrometry, which had this:
... ions are then accelerated through electric plates and subsequently deflected by a ...
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How are spin magnetic moment and orbital angular moment in opposition in a d3 ion in octahedral environment?
I have two queries firstly what does spin exactly mean and secondly how do i decide whether the spin and orbital moment are in opposition or not or is this an experimental fact.
I would also like to ...
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Why are neodymium magnets called neodymium magnets?
Neodymium magnets have a formula of Nd2Fe14B, but why are they called neodymium magnets? There are more iron atoms, and iron makes up over half of the mass of a neodymium magnet. Why isn't it called ...
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NMR spectroscopy nomenclature: induced vs local vs effective magnetic field (B)
This is a simple question but I can't seem to find a place where they use the same nomenclature... I was wondering whether these are all the same thing: $B_\mathrm{induced}$, $B_\mathrm{local}$, $B_\...
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Why is octaoxygen diamagnetic?
I tried considering that according to LCAO-MO theory $\ce{O2}$ is paramagnetic, which is confirmed by experimental evidence. Since octaoxygen has the crystal structure in figure, I thought there is a ...
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Do ferrofluid nanoparticles come out of solution when exposed to a solenoid DC field current?
As the electrically-charged ionic tails of surfactants used to attach to the magnetic nanoparticles require the particle to be magnetized to stick to them; if a ferrofluid is passed has a solenoid DC ...
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How to prevent hydrogen embrittlement in SmCo magnet?
We have a measuring apparatus that incorporates a samarium-cobalt (SmCo) magnet. Normally this is exposed to various gases under test. However, a problem has arisen with hydrogen, namely the magnet ...
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Contribution, and the way thereof, of the core 6p orbitals of compounds of plutonium(VIII)
According to the NIST database, the ground-state configuration of plutonium(VIII) is [Hg]5f³6p³, when intuitively it should be the same as neutral radon([Hg]6p⁶). Since plutonium(VIII) compounds are ...
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Why are most organic molecules diamagnetic, when most of them have non-paired nucleus spins?
I was studying some coordination chemistry and somewhere around the text it was stated that one could know the magnetic moment of a complex from its metal because since all ligands were often ...
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Is ozone paramagnetic?
This answer shows why ozone should be diamagnetic. Still, Wikipedia article says it is weakly paramagnetic, having positive magnetic susceptibility $χ = \pu{+6.7E−6 cm^3 mol^-1}.$ There's a paper ...
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Spin-only magnetic moment of [Fe(en)(bpy)(NH₃)₂]²⁺
The one that can exhibit highest paramagnetic behaiour among the following is ($\ce{gly}$ is glycinato; $\ce{bpy}$ is 2,2ʹ-bipyridine):
(a) $\ce{[Pd(gly)2]}$
(b) $\ce{[Fe(en)(bpy)(NH3)2]^2+}$
(c) $\ce{...
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Is there any way to make ferrofluids float on water? [closed]
I am trying to do an oil spill clean up experiment, and I was thinking of using magnetism to clean up oil. I could make a ferrofluid/ferripaste using some type of oil, such as motor oil or mineral oil,...
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Which ion has a greater paramagnetic property?
I just recently began studying the Molecular Orbital Theory in Chemistry and I just learnt about the paramagnetic and diamagnetic nature of molecules based on their unfilled and filled orbitals. Now ...
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Do contiguous monolayer aromatic structures retain the same magnetic susceptibility as the core constituents?
As the synthesis of Porphyrin monolayer strips is achievable, retaining the core aromaticity of the tetrapyrrole; does it still retain the same value of magnetic susceptibility of porphyrin? Does this ...
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The ways to determine if an ionic compound is paramagnetic or not
Find which of $\ce{Na2O2}$ and $\ce{CsO2}$ is paramagnetic.
(Adapted from JEE advanced paper-1 2016, q.22)
The given solution involves removing the cations and taking the anionic part, i.e. $\ce{O2^2-...
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Can molecular systems display negative magnetic susceptibility of a higher magnitude than bismuth?
Bismuth has the biggest value when it comes to a negative magnetic susceptibility than all other elements, ignoring superconductors, as they would have a value of -1.
Yet, when tables displaying ...
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Magnetic behaviour of potassium permanganate
I was going through the properties of potassium permanganate and found this-
It has two physical properties of considerable interest: its intense color and its diamagnetism along with ...
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How to compare magnetic moment of chromium(III) and cobalt(II) ions?
Is there any way of comparing the magnetic moments of $\ce{Co^2+}$ and $\ce{Cr^3+}$ gas phase ions by just going through their electronic configuration?Or is it just experimental data?
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Magnetic properties of potassium manganate(VII)
According to me, $\ce{MnO4^2-}$ is paramagnetic and $\ce{MnO4^-}$ is diamagnetic.
On the basis of this, the corresponding potassium salts inherit these magnetic properties, i.e. $\ce{K2MnO4}$ is ...
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Can a ferrite magnet be impregnated with polymer to reduce its fragility?
Ferrite magnet is a ceramic material and consists of agglomerated crystalline domains with spinel structure. Like other ceramic materials, ferrite magnets are brittle. For example, here is a photo of ...
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Origin of the NMR shielding
In a paramgnetic material the induced dipole moment of atoms or (molecules) of the material aligns with the external field. I can understand this by Zeeman splitting. A term symbol splits into states ...
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How can I make a lot of microscopic rods of metal?
I want to make around 40-200 g of metal cylinders that would ideally have a length of around 1-100 μm in size (smaller preferred). The rods will be made of some ferromagnetic material such as Iron or ...
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Easiest/Fastest way to obtain a good quantity of fine Iron powder? [closed]
I am wanting to make a reasonable quantity (10-100g) of iron powder that I can use to visualise magnetic fields (by putting the powder in a thin layer between two transparent materials).
The finer the ...
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Why is potassium permanganate paramagnetic?
$\ce{KMnO4}$ is coloured due to charge transfer spectra. As Mn doesn't have any electrons, it shouldn't be magnetic. But, according to the magnetic susceptibility value given on Wikipedia, it comes ...
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How could burying a copper and zinc plate underground connected by a surface wire (earth-based Galvanic cell) promote crop growth?
Background:
To quote a source:
In the 1840s, W. Ross of New York reportedly obtained a severalfold increase in the yield of a field of potatoes when he buried a copper plate (5 ft x 14 ft) in the ...
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Effect of magnetization on oxidation (rusting) of iron
Can magenetizing a piece of iron bar slow-down (or speed-up) the oxidation (rusting) process? In other words have any influence on it ?
From what I've looked up( wikipedia, quora), it appears that the ...
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What is the magnetic moment of tris(oxalato)nickelate(IV)?
I'm really struggling with finding the magnetic moment of this complex:
In the solutions, it says that it is 2.83 BM (which corresponds to 2 unpaired electrons). However, in drawing out the d orbital ...
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Did O₄ turn out to explain why liquid oxygen appeared to defy Curie's law? If not, what does?
Wikipedia's Liquid Oxygen says:
The tetraoxygen molecule ($\ce{O4}$) was first predicted in 1924 by Gilbert N. Lewis, who proposed it to explain why liquid oxygen defied Curie's law. Modern computer ...
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C60 Fullerene Polymers?
Upon scouring Wikipedia for info about fullerenes to research, I came across this paragraph in the page on Buckminsterfullerene (C60):
Under high pressure and temperature, repeated [2+2] ...
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Why isn't the American nickel magnetic?
I never thought that modern American nickels actually contained nickel anymore. However, according to this wiki article, the coins actually do contain 25% nickel, the rest being copper. And yet, no US ...
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T1 spin-lattice relaxation times, deviation from exponential relationship
For longitudinal relaxation, one would think that the magnetic moment obeys this simple relationship
$$M_z = M_0\left[1 - 2\exp\left(\frac{-t}{T_1}\right)\right].$$
However there is always a point ...
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Do magnetic fields generated from ion flow through a membrane channel have any physiological relevance?
Membrane pores and transporters see millions of ions flow through them per second. This creates a current and therefore a magnetic field. Do cells have any use for these fields (like maybe drawing ...
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Is there any reasonably inert magnetic oxide?
I spent yesterday evening looking for data on magnetic oxides. What is easily available isn't well organized, so I ask here in hope someone can remember.
I'm looking for a magnetic oxide (that is, an ...
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Why does concentration of solutions of alkali metals in liquid ammonia change the magnetic properties?
In "NCERT Chemistry for Class XI - Volume II", in chapter "s-block elements", under the topic "Chemical Properties of alkali metals", it is given:
(vi) Solutions in ...
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Electron Spin, and the Stern-Gerlach Experiment
I think I understand the basics of the electron spin. However, I'm trying to figure out how to tell if, when shooting a beam of atoms (the Stern-Gerlach experiment), how to tell if an element will ...
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Magnetic mercury
Well, since I'm not sure, quite simply: Is there a possible way (apart from running a current through in the presence of a perpendicular $\mathbf{B}$ field) to make a small mixture of mercury magnetic ...
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How do I solve such questions on paramagnetism and ferromagnetism?
Match the type of magnetism given in Group I with the material given in Group II:
$$
\begin{array}{ll|ll}
\hline
& \textbf{Group I} & & \textbf{Group II} \\
\hline
\text{P} & \...
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Why would ferrofluid harden?
I recently decided to make my own ferrofluid toy to play with. I built a sealed enclosure at my local fablab, and the end result was perfect. It worked just like in the videos you see online, and I ...
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Why isn't aluminum ferromagnetic?
I know that the ferromagnetism of iron is because of its unpaired d electrons, but I also know that there are other metals with unpaired electrons like aluminum that are not ferromagnetic. Is the ...
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Magnetic properties of potassium dichromate
Is $\ce{K_2Cr_2O_7}$ diamagnetic or paramagnetic?
While näive theory predicts it's diamagnetic, but we can't be sure.
I cannot find any literature on this topic.
Nor does Wiki has that information.
...
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Paramagnetism of group 2 elements
As far as I know, paramagnetism in normal substance arises due to unpaired electrons. I believe that the valence electrons of group 2 elements (Be, Mg, Ca, Sr, Ba) are paired.
But, here in the list ...
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How do hard drives store information using magnetic layering? (Antiferromagnetic/ferromagnetic films)
I am doing some work with solid state materials in some chemistry courses and I've been doing some research into exactly how a hard drive stores information as 1's and 0's. It seems like a bunch of ...
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Table for magnetic moments for all elements in periodic table? [closed]
I'm trying to look for a table for magnetic moments for all elements of the periodic table for my research project in computational chemistry, can anyone direct me to a suitable one?
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Is [Co(NH₃)₄Cl₂]Cl paramagnetic or diamagnetic?
$\ce{NH3}$ is known to be a strong field ligand, while $\ce{Cl}$ is known to be a weak field ligand.
Is $\ce{[Co(NH3)4Cl2]Cl}$ a high spin complex or a low spin complex?
I assumed this to be a high ...
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Only d orbital electrons for spin only magnetic moment
During my chemistry lessons and self studies, I have come upon many instances where I observed that during calculations of spin only magnetic moment of transition elements only the d orbital electrons ...
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