Questions tagged [electrons]
Electrons are subatomic particles with the symbol e−. They have a negative electric charge (-1 elementary charge. )
658
questions
3
votes
0
answers
151
views
Is the surface electron affinity of (tribasic) sodium- or calcium phosphate higher?
Let's imagine we have two polycrystalline samples: $\ce{Ca3(PO4)2}$ and $\ce{Na3PO4}$. A free electron is added to both. Some heat is released.
I wanted to check whether my reasoning about this ...
-3
votes
1
answer
79
views
Does the cathode always attain a positive charge or is it just a convention?
Suppose I have a galvanic cell composed of two half cells, one containing Zinc electrode dipped in an electrolytic solution (say of ZnSO4) while the another one having Lithium electrode dipped in ...
- 42.7k
-1
votes
1
answer
47
views
Why can we see color during d-d transition of electron? [duplicate]
As we know that when a ligand approaches the transition metals, the d-orbital loses its degeneracy and in this case electron can jump from lower orbitals to higher orbitals adsorbing the visible light....
- 60k
-2
votes
1
answer
81
views
Why do we only use the principal quantum number to calculate the energy of an electron in an H atom? [duplicate]
According to my high school textbook the energy of an electron in a hydrogen atom is $E = -13.6/n^2~\pu{eV}$, where $n$ is the principal quantum number of the orbital in which the electron is present.
...
- 29.2k
5
votes
1
answer
81
views
Correct Interpretation of Apparent Charge Transfer Coefficients
Good day guys,
I was looking over some $i$ vs $\eta $ for a redox reaction over a copper cathode, the cell has $\ce{LiBf4}$ in THF as the electrolyte. The main reaction taking place is:
$$\ce{N2 + 6 ...
- 267
0
votes
0
answers
24
views
Degradation via electrolysis and electrode surface area
What is the relationship between electrode surface area and processes such as electrolysis/electrode polarization?
Let's say for example I want a fixed electric field between two electrodes in a ...
- 1
7
votes
1
answer
178
views
Overlap of wave functions in Franck-Condon principle
I was revisiting the Franck-Condon-principle and was wondering about one thing.
In the Franck-Condon principle, it is stated that if an electronic transition happens, the vibrational wave functions ...
- 30.8k
-4
votes
1
answer
1k
views
Is this bond Ionic or Covalent, and why? AlBr [closed]
We know a compound could form between NaCl because they are +1 and -1 ions which make them both into a complete valence set.
Could a compound form between Al and Br, for example, and what type of bond ...
- 60k
-1
votes
1
answer
80
views
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(...
CommunityBot
- 1
0
votes
2
answers
250
views
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....
- 45
3
votes
0
answers
61
views
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, ...
- 38.4k
3
votes
1
answer
836
views
What about the aromaticity of cyclopropenylidene?
Here's a compound which we have to tell whether it's aromatic or not.
Drawing pi-orbital for the 3-membered ring, I think there are only 2 pi electrons delocalised all over the ring. The orbital ...
- 60k
0
votes
1
answer
53
views
Perforated Cathode in Anode Ray Experiment
While studying about the anode ray experiment (E. Goldstein), I had a doubt pop up in my head. In the experiment, a perforated cathode has been used. What is the exact reason behind that? Upon ...
- 30.4k
0
votes
2
answers
125
views
What does "predicted" mean in an electronic configuration?
I've noticed the term "(predicted)" appearing at the end of electron configurations for heavier elements. Could you explain what it signifies and the reason behind it? I haven't been able to ...
- 41.2k
14
votes
1
answer
4k
views
Inter electronic repulsion in s and d orbitals
This was written in a lecture slide:
Two electrons present in the same d-orbital repel each other more strongly than do two electrons in the same s-orbital.
Why is there a difference in the amount ...
- 159
50
votes
5
answers
14k
views
Fundamental forces behind covalent bonding
I understand that covalent bonding is an equilibrium state between attractive and repulsive forces, but which one of the fundamental forces actually causes atoms to attract each other?
Also, am I ...
- 6,801
-2
votes
1
answer
59
views
Stability of atoms with 4 valence electrons [closed]
How do atoms with 4 valence electrons stabilize? Do they gain or lose 4 electrons?
This might be a bit of a stupid question, but I'm not sure and I can't find anything online.
- 30.4k
1
vote
3
answers
2k
views
Can electrons be present outside orbitals? If yes, how does this affect chemical reactions?
In my physical chemistry textbook it is written that orbitals are regions where probability of finding electron is high (90% to 100%). But since orbitals are regions of probability, is it possible for ...
- 38.4k
0
votes
2
answers
85
views
Fundamental understanding of electrode potentials
The electrical double layer, is commonly used to describe the origins of electric potentials that is fundamental to electrochemistry. This model is quite outdated from my understanding, but it is ...
- 95
1
vote
3
answers
146
views
Comparing Succesive Ionisation Energies
I am trying to understand successive ionisation energies. In particular, an explanation for why the second ionisation energy is greater than the first ionisation energy. I'm looking for a clear and ...
CommunityBot
- 1
13
votes
3
answers
2k
views
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 ...
- 1
0
votes
2
answers
39
views
Electrolysis to refine metals
Why does the cathode get bigger and the anode smaller when we use copper electrodes for the electrolysis of Copper Sulphate? Why does the anode not receive electrons from the anions (e.g Sulphate and ...
- 42.7k
6
votes
1
answer
1k
views
Inductive effect on stability of free radical
How does inductive effect affect the stability of free radical?
I can't seem to understand whether the carbon with the odd electron is deficient or not.
That is, whether a +I group, like alkyl, will ...
- 828
4
votes
4
answers
10k
views
Could someone please explain the difference between m/z and m/e in mass spectroscopy
The definition:
The abbreviation m/z is used to denote the dimensionless quantity formed by dividing the mass number of an ion by its charge number. It has long been called the mass-to-charge ratio ...
-3
votes
1
answer
68
views
Aqueous electrons in electrochemical cells [closed]
In the context of a zinc-copper electrochemical cell, zinc atoms at the anode are oxidized, releasing electrons and forming zinc ions that dissolve into the solution ($\ce{Zn(s) -> Zn^{2+}(aq) + 2e-...
- 60k
2
votes
1
answer
96
views
Do solvated electrons short circuit the electrolysis of liquid ammonia
If attempting the electrolysis of liquid ammonia using NaNH2 as an electrolyte. It is understood that Na+ will form solvated electrons. I understand that these solvated electrons can dramatically ...
- 60k
3
votes
1
answer
73
views
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 ...
- 60k
-2
votes
1
answer
153
views
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 ...
- 183
-2
votes
2
answers
123
views
How do electrons travel through a fuel cell or flow battery with multiple cells?
I understand that if you have a fuel cell or flow battery with a single cell that electrons will go from the electrode and through an external circuit across the load which the fuel cell / flow ...
- 42.7k
2
votes
0
answers
48
views
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 ...
- 37