All Questions
22
questions
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1
answer
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Mg2+ ion formation [duplicate]
Why does Mg not form a Mg+1 ion, even though its second ionization energy is much higher than the first ionization energy?
(I know that an ion should resemble the noble gas closest to the element from ...
- 77
-3
votes
1
answer
282
views
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?
0
votes
0
answers
42
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In a flame test, what is being excited? [duplicate]
I have done a flame test with $\ce{NaCl}$ and got the yellow characteristic flame of sodium. I am trying to understand exactly how this yellow color is being produced and when I searched for it, I got ...
- 35
9
votes
1
answer
723
views
Why does the same electron transition release photons of different frequencies for some elements?
Question: For elements in the same period with different numbers of valance electrons, why does the same electron transition release photons of different frequencies?
Example: For valance electrons ...
- 103
1
vote
1
answer
71
views
Thickness of proton exchange membrane (Nafion)?
I am looking into using a proton exchange membrane for a bio-energy cell experiment. Previous scholars have been using Nafion as a PEM to place between the anode and cathode (air-cathode). the ...
0
votes
1
answer
457
views
Very elementary question about valence electrons of ionic compound
In a university entrance question, I found this question:
What is the number of valence electrons of $\ce{Mg(OH)2}$? Answer = 24
I know that Mg has 2 valence electrons and O has 6. But I don't ...
- 123
3
votes
1
answer
84
views
Do electrons truly flow in circuit? [closed]
I know this sounds like a stupid question, but do electrons truly flow in a circuit? It doesn't seem logical for electrons to just break away from their atoms to go move through a circuit. If they did,...
- 59
4
votes
2
answers
448
views
possibility of metallic ammonium
In chemistry class, we discussed how metallic bonding occurs when metals lose electrons and become cations while the lose electrons become delocalized electrons and bind the metal cations. These ...
- 957
0
votes
2
answers
253
views
How do lone electrons impact the charge of an ion?
This is a quite elementary question, but I still can't wrap my head around it.
I know how to calculate the formal charges of an ion or a molecule, but I don't understand what happens when oxygen (...
2
votes
2
answers
724
views
Why are these ions classified as isoelectronic?
According to Chemistry the Central Science 13 Edition, these ions are isoelectronic:
$\ce{Ca^2+}$ (18 electrons); $\ce{Cs+}$ (54 electrons); $\ce{Y^3+}$ (36 electrons)
Furthermore, the textbook ...
- 253
9
votes
1
answer
282
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Fundamentals of Li-ion Functionality
I would like to have an in-depth understanding of Li-ion batteries functionality, at atomic level. Can anyone help me to understand it? I have included some known background to support my questions.
...
- 944
0
votes
2
answers
42k
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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?
- 147
1
vote
1
answer
13k
views
Can an ion isotope exist?
Can an isotope have a charge, i.e. the number of neutrons and electrons differ in that atom?
If it does exists, is it correct to call it an ion isotope or isotope ion?
- 149
2
votes
1
answer
2k
views
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 ...
- 443
0
votes
1
answer
10k
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How many electrons does each shell hold? [duplicate]
why some times 2nd shell onward it can hold 8 electrons and other times it is like they can hold K2 L8 M18 N32? when do i have to use first method(K2 L8 M8 N8) and when to use second method (k2 L8 M18)...
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