Questions tagged [covalent-compounds]
For questions about covalent compounds - which are compounds in which all intermolecular bonds between atoms are considered mostly covalent - have a stronger covalent than ionic or metallic component. This tag is not to be confused with [bond].
279 questions
0
votes
0
answers
43
views
How exactly mutually shared electrons revolves around nucleuses? [duplicate]
In the first year, this question stroked my brain again. I have asked this question to my chemistry teacher on how exactly shared electrons move when it forms a covalent bond. He said, it is maybe ...
-2
votes
2
answers
124
views
Are all covalent compounds non-conductors of electricity?
According to my textbook:
The covalent compounds are said to be polar when the shared pair of electrons are not at equal distance between the two atoms. This results in the development of fractional ...
- 15
-4
votes
1
answer
47
views
Why does an atom become positively charged when it shares its lone pair? [closed]
Why does an atom become positively charged when it shares its lone pair?
In NH3, Nitrogen doesn't get positive charge when forming covalent bond with Hydrogens. But why does it get positive charge ...
- 13
-1
votes
1
answer
69
views
How to Determine the State of Matter of a Molecule
While many videos and even answers exist on this site about finding whether a compound is soluble in water to determine if its state symbol should be "(aq)." However, across the internet I ...
- 19
2
votes
0
answers
280
views
Do any molecules contain a phi bond?
In chemistry, phi bonds (φ bonds) are covalent chemical bonds, where six lobes of one involved atomic orbital overlap six lobes of the other involved atomic orbital. I researched this question a lot; ...
user145192
-2
votes
1
answer
94
views
Solubility of alkanes in benzene [duplicate]
According to “like dissolves like” rule of thumb, a homogeneous (true) solution forms between:
polar solvent and polar (ionic) solutes;
non-polar solvent and non-polar (covalent) solutes.
According ...
user145247
-3
votes
1
answer
91
views
How would the regions of this graph showing percentage of ionic character, be classified? [closed]
Looking here at this website - Omnicalculator, at the section of the website for calculating percentage of ionic character. Omnicalculator - Percentage Ionic Character
They let you choose elements and ...
- 503
1
vote
0
answers
40
views
Why is INDO suitable for covalent systems despite neglecting two-center two-electron integral?
I do not have a good basis understanding of basic chemistry so I am hoping to obtain an explanation that is as narrow as possible.
My current understanding of the semi-empirical method INDO is that
...
- 121
-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
-1
votes
1
answer
578
views
Is mercury(I) chloride ionic or covalent?
Is mercury(I) chloride ionic or covalent? If I look here, I see arguments either way. The article doesn't mention anything about a cation or an anion.
Some might think there's two mercury ions each 1+ ...
- 503
-5
votes
1
answer
43
views
How's the formula mass of a molecule calculated? Is it the mass in it's empricial formula or molecular formula? [closed]
Like glucose, butane and benzene. How would you calculate their formula mass? Would you calculate it as the mass of their empricial formula or their molecular formula (basically same as molecular mass)...
3
votes
1
answer
251
views
Do covalent networks experience dipole-dipole forces?
After my research, I have learnt that dipole-dipole forces only exist between polar covalent molecules.
I am aware that covalent networks are not molecules, thus they obviously cannot be classified as ...
- 39
0
votes
0
answers
138
views
How does the canonization method of RDKit operate when valence is exceeded?
RDKit's canonization method1 allows nitrogen to bond with 3 hydrogen atoms and one oxygen atom
...
- 195
0
votes
1
answer
115
views
Formation of tetrafluoroborate using VBT and hybridisation
How can the formation of $\ce{BF_4^-}$(Boron is $\ce{sp^3}$ hybridized) be explained using VBT and Hybridization? So far, I understood that one electron from s orbital gets excited and jumps into a p ...
1
vote
1
answer
100
views
Does I2 form coordinate covalent bond with PI3 in PI3.I2 (PI5)
As PI5 is uncertainly stated as the combination of PI3 and I2. There are suggestions that phosphorus donates its 3s electron pair to molecular orbital of I2 or I2 donates its electron to 3d orbital of ...
- 651
-4
votes
1
answer
215
views
Query regarding covalent bonding
Why don't covalent bonds result in the atoms involved in the bond being charged?
Let's take the Chlorine/Cl2 molecule as an example.
So each Chlorine atom in the Cl2 molecule has 7 valence electrons. ...
- 1
-3
votes
1
answer
181
views
Why do stable covalent compounds react with water [closed]
I am curious why a discrete covalent molecular substance, say CO2, would react with water to form an acid, what happens in such a reaction? I'm assuming it has something to do with disassociated ions ...
- 101
-1
votes
2
answers
356
views
Do two atoms 'participating' in a single covalent bond rotate in only one direction, without rotating the entire molecule?
A Biology textbook stated that, "single bonds allow the atoms they join to rotate freely about the bond axis".
This definition is not clear enough for me to answer the question, "do two ...
- 65
1
vote
0
answers
84
views
How can atoms get very close together even without direct covalent bonds between them? [closed]
Generally speaking, because of the Pauli exclusion principle, it’s difficult for the electron clouds of two atoms to overlap unless they are covalently bound together. The degree of overlap can be ...
- 589
1
vote
2
answers
3k
views
Compare the covalent character of ZnCl2, CdCl2,HgCl2
I want to know how to arrange the covalent character of ZnCl2, CdCl2, and HgCl2.
By Fajans' rules, We know that a smaller cation equals higher covalent character.
We also know that atomic size ...
- 199
3
votes
1
answer
242
views
Covalent character of bonds in uranium hexafluoride
In one of the questions in a qualifying exam it said that $\ce{UF6}$ is a "covalent compound". This fits the physical properties of the compound well, e.g. low boiling point, existence as ...
- 593
-1
votes
2
answers
1k
views
Why does carbon dioxide forms simple molecular structure, but silicon dioxide forms giant covalent structure? [duplicate]
I was wondering about this in class, drawing the structures of carbon dioxide and silicon dioxide.
Carbon and silicon are both in Group 4/14, but coming up with oxygen, one can only form a simple ...
- 1
0
votes
0
answers
52
views
Covalent compounds-What are the reasons for attraction between atoms to be strong...? [duplicate]
In general, most of the covalent compounds are known to have low boiling point and melting point due to the weak Van der Waals forces between molecules in them, requiring lesser heat to break the bond....
-4
votes
1
answer
163
views
If sulfur is directly below oxygen on the periodic table, why isn't SO the most common sulfur oxide? Instead of third, behind SO2 and SO3? [closed]
Chalcogen like oxygen and sulfur want to 'grab' (or share) two electrons to get to eight, if possible, or maybe 'give up' (or share) six, if necessary, to again get to eight... Right?
So, why is ...
- 1,833
-1
votes
2
answers
872
views
Why covalently bonded molecules have strong bonds within the molecule?
While studying the chapter carbon and it's compounds in NCERT page 60
I came across this line:
Covalently bonded molecules are seen to have strong bonds within the
molecule but intermolecular forces ...
-3
votes
2
answers
590
views
Why do non-metals not form Ionic bonds(Ti-C, Sc-P) and instead form covalent compounds? [closed]
Is there something like, "sharing or gaining electrons gets harder", or is there something that lays hidden from common sight?
I am looking for a High-School Level Answer, pls something ...
- 15
0
votes
2
answers
169
views
Can there be a molecule where every atom is covalently bonded to every other atom? [closed]
I was wondering if muliple atoms could bond in a ring, but share a pair of electrons with every other atom in the molecule so that every atom is connected to every other atom. Would it be possible for ...
- 19
4
votes
2
answers
647
views
Why aren't ionic crystals stronger than diamond?
If ionic bonds are stronger than covalent bonds, then why aren't ionic crystals stronger than diamond, which is bonded by covalent bonds?
Diamond has tetrahedral structure with carbons forming ...
- 59
-2
votes
2
answers
1k
views
Why are group 13 compounds in the +1 oxidation state more ionic than those in the +3 oxidation state?
I know that for group 13 metals in the p block, the stability of +1 OS is generally more than the stability of +3 OS as it is energetically not favourable to attain the higher OS of +3 and such ions ...
user120098
3
votes
1
answer
234
views
Can two noble gases attract each other?
If two hydrogen atoms are far apart, they have no effect on one another. But as they are bought closer together, they begin to excerpt an effect. The two nuclei, having the same positive charge, repel ...
- 369
-1
votes
1
answer
395
views
What are the Ionic Properties of Co-ordinate Covalent Bonds? [closed]
In my 10th grade book, it says that
A coordinate bond has properties of both covalent and ionic bonds. Therefore, it is also called dative or co-ionic bonds.
I understand that it has properties of ...
0
votes
1
answer
259
views
If bond types are in reality intermixed, how come different bonds form completely different structures?
According to the bond triangle, compounds don't exist as solely ionic or solely covalent, but rather have ionic, covalent, and metallic character to them. So each bond type is connected and similar in ...
1
vote
1
answer
957
views
What exactly is giant covalent molecule?
What exactly is the definition of "giant covalent molecule"? All sources online don't give a definition but instead, allude to properties of examples of giant covalent molecules (such as ...
- 169
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
4
votes
2
answers
572
views
Does lithium form ionic hydride? [duplicate]
It is stated in my chemistry textbook that lithium indeed forms lithium hydrides. However, significant covalent characters could be found in lithium hydrides (like least reactivity).
But in some other ...
-3
votes
1
answer
304
views
Comparing covalent characters of two halides of group 15
Which is more covalent : NCl3 or PCl5 and why?
This question was asked on a test, and the given answer was NCl3. Shouldn’t PCl5 be more covalent since pentahalides are more covalent than trihalides?
0
votes
0
answers
118
views
Why does steam store large amounts of energy?
We all know that steam can be used to perform mechanical work and steam has a high capacity for energy storage. But why does steam have such high energy capacity?
I tried searching for answers on the ...
- 213
-2
votes
1
answer
461
views
Why can covalent compounds dissolve in organic solvents? [closed]
Why can covalent compounds dissolve in organic solvents? I researched about it a little and I found an article which said:
"Mostly all organic compounds are non-polar in nature. Also, covalent ...
4
votes
3
answers
142
views
How are compounds within a complicated mixture detected?
I was reading an article about an independent pharmaceutical watchdog group called Valisure which recently released a report stating that they found Benzene, a toxic substance, in many bottles of ...
- 311
-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 ...
0
votes
0
answers
26
views
How do bond electrons covers both atoms in covalent bond? [duplicate]
I want to know how bonding electrons behave when they have to cover for both atoms. Electrons can spin around only one atom right? If so, then what happens when a covalent bond forms?
Let's say we ...
- 11
-1
votes
2
answers
131
views
Is this analogy right? [closed]
Is my logic correct in this case ?
Since the formal charge represents the charge the element possess in a covalent compounds, is it right to say that formal charge is the equivalent term for covalent ...
- 65
2
votes
0
answers
341
views
Is Polyethylene Glycol always derived from Ethylene Glycol? If not, how does it differ?
I have heard Polyethylene Glycol is derived from Ethylene Glycol, so was doing some research to see how they differ and found this.
Now this states that:
Polyethylene glycol is produced from the ...
- 49
4
votes
0
answers
77
views
Dielectric constant for gases possessing van der Waals forces [closed]
I've learnt that water can dissolve ionic bonds because it possesses a high dielectric constant.
In the cases of covalent compounds (especially the non-polar covalent compounds), where the molecules ...
- 65
2
votes
1
answer
2k
views
How can I know which molecule is more stable when bond order it's equal?
So, I was wondering, I have these molecules $\ce{O^+2}$, $\ce{O^-2}$, $\ce{O2}$ and $\ce{C^+2}$.
When I try to find their bond order and their magnetic nature I get this:
$\ce{O^+2} = \frac{1}{2} \...
- 65
6
votes
1
answer
2k
views
Does boron form compounds without covalent bonds?
I have read that boron, due to the very high sum of its first three ionization energies, it is not able to form its +3 ions, and thus it generally forms only covalent compounds. But in a popular ...
- 1,248
-1
votes
1
answer
599
views
How to determine what covalent compound a substance is?
I have been given a substance which is unknown in my class. The substance is white in colour and is in a powder form. I have conducted a few tests and have found out that the substance is a covalent ...
- 3
1
vote
0
answers
37
views
What kind of bond exists between a metal and a non-metal with a difference in electronegativity of less than 1.7? [duplicate]
I'm being taught that the kind of bonds that exist between elements depends on the electronegativity difference between the elements. A difference less than 1.7 is covalent and a difference higher ...
- 11
-2
votes
1
answer
594
views
How is dipole moment of ammonia less than sulphur dioxide? [closed]
Sulphur dioxide has only two bonds at 180º so shouldn't the dipole moment of molecule be 0 and as ammonia has 1 lone pair so it's dipole can't be 0 so how Sulphur dioxide has more dipole moment than ...
- 7