All Questions
Tagged with covalent-compounds electrons
15 questions
-4
votes
2
answers
172
views
How does the same electron orbit both atoms in covalent bond? [closed]
During elementary school chemistry, when they teach about the covalent bond, they say that both atoms need the electron but they can't lose or gain them so they share it.
And for instance they show us ...
-1
votes
1
answer
166
views
Why are different Aluminium valencies observed from NMR and what logic can be used to normalise molar ratios of different valency atoms?
Question 1:
I've observed different chemical shifts in 27Al Nuclear Magnetic Resonance (NMR) spectra of commercial aqueous sodium aluminate, indicating the presence of both trivalent [Al(III)] and ...
- 500
0
votes
0
answers
37
views
How big a role does electron repulsion play in regard to the bond length of a covalent bond? [duplicate]
In a covalent bond, there are several forces acting together to determine the bond length.
Electron-electron repulsion increases the bond length.
Proton-proton repulsion increases the bond length.
...
- 317
-2
votes
1
answer
169
views
Lone pairs of electrons and covalent bonding [closed]
Every time I saw a covalent bond structure, I notice that there are always lone pairs or no electrons left in the outer shell of the atoms. Is it compulsory for covalent bonds to have lone pairs or no ...
-1
votes
1
answer
3k
views
Electrons in methane [closed]
Why does a molecule of methane have 10 electrons?
I used to think that the number of electrons in methane were 8 in number but it turns out that there are 10 in number but i dont know why.
Please ...
- 73
-1
votes
1
answer
426
views
The nature of a PN junction - Whats preventing full 'diffusion' of electrons?
In this image:
Can the following electron take up 'hole'?
If so, this question is sort of leading onto a bigger question about PN junctions.
What is preventing the electron in the ion from moving ...
- 109
-3
votes
2
answers
1k
views
Can alkenes have triple bonds?
Or is it characteristic of alkynes only ? also, can they (the alkenes) have double and triple bonds in the same molecule ?
- 273
1
vote
0
answers
430
views
Workfunction and Bond Energy
Workfunction is the minimum energy required to remove an electron from the surface of the material. If the striking photons does not have the required energy then it won't be able to eject the ...
- 11
-2
votes
1
answer
789
views
When do I say "Three single covalent bonds" and "Triple bond"
I've a doubt I can't seem to get cleared.
Carbon has 4 electrons in its last energy level right? But what do I call the bonds that it makes?
The same thing goes with my main question...
when do I say ...
8
votes
3
answers
9k
views
Does the shared electron in Covalent bonds revolve around nucleus?
We know that electrons are charges that revolve around the nucleus. Then, when in covalent bonds the electron is shared; does the electron obey the rule?
1
vote
1
answer
1k
views
Hypervalency in elements in the second period
In my experience, most texts that address hypervalency say that it only occurs from elements in the 3rd period and onwards. This explains the occurrence of $\ce{Cl2O7}$ or chlorine heptoxide. However, ...
- 2,141
0
votes
1
answer
1k
views
Chemical bond-covalent-valence electrons OH-
I would like to ask how many valence electrons took part in creating chemical bond in $\ce{OH-}$? Is the minus related to $\ce{O}$ or to $\ce{H}$? Are there any spare valence electrons which didnt ...
- 143
6
votes
1
answer
11k
views
Sulfur trioxide - vacant d-orbitals
Sulfur trioxide violates the octet rule. Upon drawing the Lewis dot structure for sulfur trioxide, we see that the central sulfur atom is bonded to three other oxygen atoms by double covalent bonds. ...
- 201
5
votes
1
answer
3k
views
How to determine stable electron states in ionic and covalent bonds?
I'm working on a program that needs to determine if a bond between two or more elements will result in a stable state. I understand at a high-level how to fill electron subshells using the Aufbau ...
- 161
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 ...
- 705