Questions tagged [electrons]
Electrons are subatomic particles with the symbol e−. They have a negative electric charge (-1 elementary charge. )
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Do Hartree-Fock (or other model Hamiltonian) electron densities fullfill the Kato theorem?
I have done Hartree-Fock calculations on a single He atom and now I tried to check numerically if the electron density fulfills the Kato theorem. It apparently doesn't. Instead I obtain a cusp ...
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Confused about identifying delocalized electron pairs in Isoniazid
I have to identify delocalized electron pairs in Isoniazid (pairs not shown in the image below):
I know the nitrogen in the ring has a localized electron pair, since it already forms a pi bond. I'm ...
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how can I tell compton versus coherent scatter apart?
I am trying to get a better understanding of compton and coherent scatting, along with all the other interactions. It has seemed like a lot to memorize and I am trying to find ways to more easily ...
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Question about reaction in battery
I made a battery like this.
$\ce{(-)Al|HCl,CuSO4|Cu(+)}$
By piling up 6 battery of this(actually I made this using 10 yen and 1 yen coins:10yen coin is Cu and 1 yen coin is Al.) I could turn on an LED ...
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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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How do the spin-matrices change in systems without spherical symmetry?
The (non-relativistic) spin matrices of a free electron, with $z$ as the quantization axis, read:
$$
\boldsymbol{S}_{x}=\frac{\hbar}{2}\left[\begin{array}{ll}
0 & 1 \\
1 & 0
\end{array}\right],...
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AlCl3 and water
While reading Clayden's (et al) Organic Chemistry I stumbled upon a reaction on page 120 that I just fail to wrap my brain around. It describes a reaction of AlCl3 with water and states that, quote, &...
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What will the correct value of spin quantum number for last electron of Na+ ion?
Electronic configuration of $Na^+$ ion is $1s^2,2s^2,2p^6,3s^0$.
I have noticed usually , we take spin quantum number as +1/2 first & then -1/2.
So , like for the above Q:It is for first 3e=+1/2 &...
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Number of π electrons in all trans-2,4,6-octatrienoic acid
Sketch the Lewis structure of all trans-2,4,6-octatrienoic acid.
(a) Consider the delocalized π electrons. Employ the particle-in-a-box model. Drawing on your knowledge about the occupation of ...
user85551
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Excitation states of neon (or other gas) inside neon lights
I'm interested in the spectra of gas discharge tubes.
Taking neon as an example, when I look up on NIST the spectra for neon, I find excitation states up to Ne IX. Where do I find/how do I work out ...
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Ionic radius for tetrahedral metal–ligand complexes
The ionic radii for metal–ligand complexes that are in an octahedral coordination are easy to find. I understand that when the $\mathrm{e_g}$ orbital is filled, the ionic radius increases because the ...
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Direction of electron density in p orbitals
$\mathrm{s}$ orbitals are spherically symmetric while $\mathrm{p}$ orbitals are not. For Boron, the electronic configuration is $\mathrm{1s^2 2s^2 2p^1}$.
In which p orbital does the most energetic ...
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Free Electron-Bond Electron Interactions
I am reading an introductory textbook on electronics: Practical Electronics for Inventors by Paul Scherz and Simon Monk. In a section discussing the motion of electrons in circuits, the textbook ...
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How are second and third electron affinities of atoms measured?
Wikipedia data page on electron affinities shows second and third electron affinities. Of course, they are negative, because one tries to attach electron to anion. But how are they measured or ...
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As an atom get's bigger (on increasing atomic no.) , electrons have to move faster and faster around the nucleus, Why?
Does speed even make sense at such small scales ? Heisenbergs Uncertainty principle ?
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