All Questions
Tagged with electrons inorganic-chemistry
48
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3
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Is double excitation of nitrogen possible, and would it be able to use it as a central atom in a coordination complex?
I’m 17 and in my 2nd year of high-school (we have it a tad different here in the Czech Republic) and am interested in theoretical chemistry so that’s the explanation of the nature of my question.
So, ...
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votes
1
answer
80
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Degeneracy of Orbitals
(Sorry, in advance if my question is silly or low quality but I want to ask this to someone.)
When an electron enters an orbital, it should technically have an electric Field and also magnetic field(...
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13
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3
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Do electrons really hang around the electrode while ions go take a swim?
This answer to this post addresses "what happens if you dip a single zinc electrode into some electrolyte solution." It explains that
However, though the zinc ion can diffuse through the ...
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3
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1
answer
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Why are Mo(NR2)3 complexes isolobal with the nitrogen atom in N2
In a Molybdenum complex of the form Mo(NR2)3, the Mo is in the oxidation state of +3, leaving it with 3 d electrons. When combined with an additional 2*3 electrons from the ligands, this leaves it ...
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1
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Colour of coordination compounds due to d-d transition
Hexaaquanickel(II) is green but tetracyanidonickelate(II) is colourless.
On internet I found two explanations.
One used valence bond theory that claimed there is no excitation of electron in ...
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-2
votes
1
answer
48
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Where does the ionisation energy for a reaction to take place comes from? [closed]
Can anyone tell me exactly what happens during a chemical reaction in terms of ionisation energy? I know that during a reaction there is an exchange of electrons (except for those where electrons are ...
-3
votes
1
answer
288
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Why does the oxygen in NaOH (sodium hydroxide) acquire an electron from the sodium if it's going to become unstable and give away the electron? [closed]
Mind you that the oxygen is already stable, having an even number of electrons and protons? Is the oxygen really neutral when it has an even number of electrons and protons?
-1
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1
answer
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Refrence on shielding effect vs inter electronic repulsion
Recently I came across a very interesting concept , some scholars were saying that -
Shielding accounts just one component (radial) of interelectronic repulsion not complete repulsion
Who they are -
...
3
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0
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475
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Shielding vs electron-electron repulsion
Example of shielding:
(source)
The last electron in the 6s subshell of $\ce {Cs}$ is shielded from the nucleus by the inner electrons.
Example of electron-electron repulsion:
The electron affinity of ...
user119245
2
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0
answers
767
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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, &...
-1
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1
answer
276
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What does valence electron mean (in the context of spdf orbitals)?
For a little bit of context, my background is in physics and my understanding of chemistry doesn't go past, say, middle school level. Recently, I decided to self-study chemistry and picked up "...
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1
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Can use lead(II) oxide instead of lead(IV) oxide in car battery?
Question: If the discharge input equation $\ce{PbO2}$ is replaced by $\ce{PbO}$, will the battery still work? I think the product will not be water anymore but hydrogen gas. I am asking this question ...
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votes
2
answers
250
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Order of Shielding Effect for orbitals
From what I know Shielding effect is the ability of inner electrons to repel outer electrons and reduce the Nuclear charge felt by the outer electrons and this is caused by electron-electron repulsion....
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3
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0
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101
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Why is the bond angle of sulphur difluoride greater than that of hydrogen sulphide?
Why is the bond angle of $\ce{SF_2 (98.05^\circ) > SH_2 (92.11^\circ)}$?
Isn't this contradicting Bent's rule or otherwise electron repulsion rule ? Fluorine is more electronegative and hence it ...
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2
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What would happen if the alpha particles directly hit the electrons in the gold foil in Rutherford's experiment? [closed]
What would happen if the alpha particles directly hit the electrons in the gold foil in Rutherford's experiment?
Would it get ionized or is there no probability of such a thing happening ?
2
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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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1
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Electron configuration of iron(I) cation
What is the electron configuration of $\ce{Fe+}$ cation?
\begin{align}
\ce{Fe+} &\!:~ [\ce{Ar}]\mathrm{(3d)^6(4s)^1}\label{chm:1}\tag{1}\\
\ce{Fe+} &\!:~ [\ce{Ar}]\mathrm{(3d)^7(4s)^0}\label{...
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1
answer
132
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Distribution of negative charges in iodine dioxide difluoride anion [closed]
I was drawing the structure for $\ce{[IO2F2]-}.$ I'm stuck on whether the negative charge should be given to oxygen or iodine.
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1
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1
answer
79
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Alkali metals chemistry [closed]
Ok my understanding of the electronic structure of atoms could be wrong but this is why I don't understand:Why alkali metals are so much electropositive.
Some high school professor in chemistry would ...
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1
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2
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How come we can't use the equivalence point equation of NV=NV in this problem?
So, the problem is you prepare to standardize a $\ce{Na2S2O3}$ solution. $\pu{32 mL}$ of $\ce{Na2S2O3}$ solution is titrated into $\pu{50 mL}$ of a $\pu{0.01 M} \ \ce{KIO3}$ solution to reach the ...
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1
answer
185
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Predicting directions of redox reactions [closed]
Hello!
In this textbook example question, how come the chlorine reaction, which has the greatest reducing power will not react? If it has the greatest E of 1.36 V that means it has most reducing ...
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votes
1
answer
137
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How does Fe2+ become Fe in sacrificial protection? [closed]
I've searched low and high on the internet, but nothing to help me.
I know that zinc is oxidised in preference to iron, and that it "donates" those two electrons to iron.
$$\ce{Zn -> Zn^2+ + 2e-}$$...
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4
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How can a neutral atom attract electrons when it's supposed to have zero charge?
A neutral atom is an atom with an equal number of protons and electrons
We know the force of attraction between the proton and electron is equal
and assuming that:
one proton's positive charge ...
- 639
0
votes
0
answers
19
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Electron shells and subshells energies [duplicate]
According to what i learned in university, the energy of orbitals increases when the principal quantum number n increases. Also, in a given shell, s orbitals have lower energy than p orbitals which ...
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4
votes
2
answers
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MO diagram of BeH₂
I was learning about the MO diagrams of triatomic molecules and was left slightly confused about $\ce{BeH2}$.
A picture of the MO is shown below:
When looking at the $\mathrm{1s}$ combinations, I ...
- 339
1
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1
answer
117
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What is the correlation between electronegativity and the sharing of electrons?
For example in a C-O bond, the electronegativity difference is 1.2. does this mean that the Oxygen has 1.2 of the shared electrons and Carbon 0.8 (or some other numbers)? Is there a specific equation ...
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1
answer
1k
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Why does ionisation energy to remove electrons from the same subshell increases? [closed]
Electrons in the same subshell possesses the same energy.
So why does ionisation energy to remove electrons from the same subshell increases?
For example, $\mathrm{2s^2}$ has two electrons. Since ...
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1
answer
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Compounds with high electron density [closed]
If $d$ is the ratio of the total number of electrons in a compound and the average radius(of all anions and cations, or covalent radii), are there known compounds (inorganic or organic) where $d$ is ...
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1
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243
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Electron Energy Levels? [closed]
New to chemistry; In my book it talks about electrons in atoms moving from one energy level or shell to another and denotes this by n. How does this exactly happen, do electrons move to different ...
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10
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3
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515
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Magnetic moment μ approximation
I've been reading a bit about the magnetic moment (spin-only) $\mu_{s.o}$ where they give a formula relating this to the number of unpaired electrons
$$\mu_{s.o}=\sqrt{n(n+2)}$$
where $n$ is the ...
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0
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Unpaired electrons from magnetic moment
A complex formulated as $\ce{Cs_x[NbCl6]}$ has spin-only magnetic moment $\mu_{s.o}$ of approximately 2 B.M. From this value calculate how many unpaired electrons are present.
Spin-only magnetic ...
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1
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Half-Filled Shells and Stability explanation [duplicate]
I am reading a book about Advanced Chemistry, and it is discussing the subject of half-filled orbitals.
The book notes that Chromium has an electron structure of $1s^2 2s^2 2p^63s^23p^63d^54s^1$
...
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2
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Energy of electrons in the same subshell
So I have this quote from wikia (it's similar to my lecture pdf file) but I don't fully understand the statement
Although it is commonly stated that all the electrons in a shell have the same ...
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1
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Order of the subshells in an electron configuration
According to what my chemistry teacher said, the energy of a subshell is given by the sum of its principal quantum number (n) and its second quantum number (l).
e.g.:
1s = n+l = 1+0 = 1
2s = n+l = 2+...
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0
answers
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Nomenclature of This State?
I've read this in a book
It says the state having three parallel spin is called triplet state .
But as far as I know it is determined by "2S+1", from this it comes out to be 4 . Then how it is "...
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20
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1
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349
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Is it possible create crystalline solvate of electrons?
Okay, I know that this reads ridiculous insane, but one can obtain solvated electrons by adding sodium metal to liquid ammonia solution.
The chemical reaction as written in my inorganic chemistry ...
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1
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0
answers
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How does SOFC work?
The Solid Oxide Fuel Cell is a particular case in which an oxide is used as a conductor. Once i've heard that oxides usually aren't good conductors but it turned out that a lot of oxides are ...
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2
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What is the number of unpaired electrons in Fe 2+? [closed]
Specifically, how can I find out the number of unpaired electrons in any ion?
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1
answer
14k
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Why does Sulfur have 12 valence electrons in the Sulfate ion? [duplicate]
So I am completely and utterly confused about why sulfur has $12$ valence electrons. I understand in it's configuration, it has $2$ electrons for the $3\mathrm s$ subshell, and $4$ electrons from its $...
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1
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If d-electrons are such poor shielders, why do trends increase more gradually across the d-block than the s or p-block?
If I understand correctly, the shielding effect of d- (and f-) electrons seems to be much poorer than those of s- and p-electrons, due to the fact that they are less penetrating, have less electron ...
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1
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Why can't electrons be transferred using hydrogen ions?
Recognizing how oxidation and reduction occurs is essential for analyzing and understanding biochemical reactions. Which of the following methods would NOT be employed in transferring electrons in ...
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1
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By using the magnetic susceptibility, calculate the number of unpaired elections in the complex
I'm having trouble making sense of this answer. I believe I am doing all the steps right, but my main concern is that I am not arriving at a whole number. If my answer is correct, should I just round ...
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2
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What causes the colour when conducting flame tests on solid salts?
The normal technique for flame tests is to dip a clean nichrome or platinum wire into a solution of the relevant salt, and observe the resulting flame colour when inserting the wire into a non-...
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2
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Is shielding of electrons really best described as shielding or is it really Coulombic repulsion between electrons?
For example, take the 2s electron in lithium - is the reason that it's ionisation energy is lower than would be expected if "shielding" didn't occur at all because the 1s electrons shield the ...
- 9,802
3
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1
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356
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Balancing redox equation
So I had these two reactions that confused me .. I tried the standard way of balancing it (Putting oxygen number everywhere, +1,+2,-2 etc.) and then go on with it but it didn't work
So anyways here ...
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3
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Why is fluorine the most electronegative atom?
It seems related to the atomic size but hydrogen has a smaller atomic size than fluorine. Why is fluorine the most electronegative atom?
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Prediction of ionic reduction?
Here are some standard electrode potentials:-
$$\ce{SO_4^{2-} + 4H^+ + 2e^- -> SO_2 + 2H_2O}\\E^o=0.17\mathrm{V}\\
\ce{NO_3^- + 4H^+ + 3e^- -> NO + 2H_2O}\\E^o=0.97\mathrm{V}\\
\ce{NO_3^- + ...
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Extraction of hydrogen and oxygen from water
The apparatus that I am using is a glass container, with two electrodes,two glass cylinders, water, and a battery. In the glass container will be filled with water and two electrodes kept inside the ...
