Covalent compounds are chemical compounds in which all intermolecular bonds between atoms are considered mostly covalent - have stronger covalent than ionic or metallic component.

learn more… | top users | synonyms

5
votes
1answer
67 views

Is trisulfuric acid hypothetical?

In the preparation of sulfuric acid through contact process, Hot sulfur trioxide passes through the heat exchanger and is dissolved in concentrated $\ce{H2SO4}$ in the absorption tower to form ...
0
votes
0answers
31 views

Is the difference between ionic and covalent bonds continuous or is there some non arbitrary point where one becomes the other?

Covalent bonds can be dipole. So is an ionic bond a very dipole covalent bond or is my understanding wrong?
0
votes
0answers
52 views

How do covalent crystals melt?

A network solid, like diamond or silicon dioxide, has a lattice of covalent bonds that make up a giant structure. Normally when you melt a simple molecular substance, you are breaking the inter ...
4
votes
0answers
27 views

Increasing Covalent character increases Colour intensity

I observed some trends as follows PbCl2 white and PbI2 yellow SnCl2 white, SnCl4 red and SnI4 black AgCl white, AgI,AgBr and AgCO3 yellow In all these cases as the size of anion increases ( ...
1
vote
1answer
55 views

Covalent Compounds in Water [closed]

A book that I have contains the following lines :- In trivalent state, most of the compounds being covalent are hydrolysed in water. (NOTE : This line is present in a chapter on p-block elements ...
5
votes
2answers
97 views

How many hydrogen bonds in these compounds?

We usually get some questions about how many hydrogen bonds these compounds can create, we use it to differentiate between the boiling point of each one of them so it would be great if you could help ...
3
votes
0answers
51 views

What type of bonding is present in lithium tetrahydridoaluminate?

I can tell that the negative ion has one bond which is a co-ordinate/dative covalent bond. However, overall, would you say that lithium tetrahydridoaluminate (lithium aluminium hydride) is ionic? If ...
-2
votes
1answer
55 views

How many electrons will be shared?

Suppose we are to make a bond drawing of a covalent bond between two nitrogen atoms. How would we know how many electrons are shared in each (3)? Do we just logically look at it and see how many ...
1
vote
2answers
47 views

Would tin (II) sulfide be considered a covalent network solid?

Considering that tin has a Pauling electronegativity of 1.96 and sulphur 2.58, and that a bond is considered to be ionic with a Pauling EN difference of approx. 1.7 at the least, would tin (II) ...
3
votes
1answer
142 views

Is FeS2 both an ionic and covalent compound? [duplicate]

Iron (II) disulfide. Iron pyrite. Fool's gold to some. But what bond does it fall under? It could possibly be used for both? This would give a deeper understanding into other like examples, where ...
1
vote
0answers
24 views

Coupling patter for a methyl-butyl ether [duplicate]

What would the high resolution H-NMR spectroscopy coupling pattern look like for the hydrogen attached to the carbon the arrow is pointing at? I am confused because there is a CH2 connected to either ...
0
votes
0answers
7 views

how to create a semi permanent dye for eyebrow drawing

I am looking to create a semi permanent dye to use on eyebrows.  I would like to be able to use pigment that is meant for microblading/feathering (tattooing of the skin, skin is needled with small ...
1
vote
0answers
54 views

Why do BF3 and NH3 react when B has an expanded octet in the adduct?

I know that some elements like sulfur are able to have an expanded octet due to vacant $\mathrm{d}$ orbitals. However, boron and nitrogen do not have any such vacant place so how is it that $\ce{NH3}$ ...
0
votes
1answer
112 views

What is the geometrical structure of Pb3O4?

I'm confused by the structure of Pb3O4. There are some sites claiming that it is a six membered ring of alternating Lead and Oxygen atoms with another Oxygen atom in the center bonding with 2 out of ...
2
votes
3answers
267 views

Is KHF2 an ionic compound or a covalent compound?

The statement below is an excerpt from my school textbook:- Because of the tendency of fluorine to form hydrogen bond, metal fluorides are solvated by $\ce{HF}$ giving species of the type ...
3
votes
1answer
73 views

Can the compounds NOF3 and POF3 both exist?Why?

Today I came across a question (in one of my books) like Can the compounds $\ce{NOF3}$ and $\ce{POF3}$ both exist? Why? After some googling I found that both of them do indeed exist. I can ...
0
votes
2answers
127 views

What type of bond(s) are present in BH4 - ion?

In BH4- ion what bonds are present between Boron and Hydrogen? Is 3 covalent bonds are present between B and 3 H and other Hydrogen acts as an Hydrogen ion (H-) and forms coordinate bond with Boron ...
-1
votes
1answer
38 views

Compounds forming between silicon gallium and nitrogen [closed]

What are the possible compounds that can form between silicon, gallium and nitrogen?
2
votes
2answers
80 views

Metallic bonding and covalent boding

Why do metallic bonds have delocalized electrons, whereas covalent bonds only share electrons? Does it have something to with the atomic masses of the individual non/metals or something else? I'm ...
0
votes
1answer
951 views

Intermolecular Forces for Ionic Compound?

So in class we have learned London dispersion, dipole-dipole, ion-dipole and hydrogen bonding for intermolecular forces. Our teacher always uses covalent molecules as examples. So I was wondering ...
0
votes
0answers
51 views

Why would phosphorus pentoxide be called 'phosphorus(v) oxide'?

There's a question in the chemistry textbook I use with my GCSE class which asks pupils to identify which of various compounds feature ionic bonding. One of the compounds is phosphorus(V) oxide, which ...
2
votes
2answers
330 views

Determine polarity of covalent bond with formal charge

In a covalent molecule, can we conclude that if the formal charge between two atoms are +1 and -1 respectively, then the chemical bond acting between them is a polar covalent bond (such as the bond ...
3
votes
1answer
665 views

Structures for NO+ (Nitrosonium)

There are two possible structures for Nitrosonium : In the first structure, there is a +1 Formal charge on Oxygen, whereas, In the second structure, there is a +1 Formal charge on Nitrogen. Q. ...
3
votes
0answers
89 views

Geometry of AsF5

Which of the following is the best description of the arragement of fluorine atoms around the arsenic atom in a molecule of AsF$_5$? (a) trigonal bipyramid (b) octahedron (c) tetrahedron (d) ...
0
votes
0answers
50 views

Number of co-ordinate (dative covalent) bonding

How can I calculate the number of co-ordinate (dative covalent) bonds in a molecule? For example, how many co-ordinate (dative covalent) bonds are there in $\ce{NO2+}$?
0
votes
0answers
21 views

Checking the possibility of a carbon compound [duplicate]

Is such a compound possible? Note, the carbon fulfils the tetra valency. If yes, then what will be it's IUPAC name? P.s. sorry, the image is rotated! Basically, all carbons are attached in a ...
1
vote
1answer
52 views

Name for HxOy compounds?

Is there a name for the class of stand alone molecules that contains oxygen, water, hydrogen peroxide, and ozone? ($\ce{O2}$, $\ce{H2O}$, $\ce{H2O2}$, $\ce{O3}$) I would not want to include hydroxyls ...
7
votes
3answers
532 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
1answer
93 views

Covalent bonds other then 2-center, 2-electron bonds

I've heard of single bonds, double bonds, triple bonds, and quadruple bonds between two atoms, but in each of those bonds the two atoms contribute the same number of electrons from each of their ...
3
votes
3answers
2k views

Why the bond angle of PH3 is lesser that that of PF3?

We can explain why the bond angle of $\ce{NF3}$ (102°29') is lesser than $\ce{NH3}$ (107°48') by the VSEPR theory, since lone pair lone pair repulsion is greater than lone pair bond pair repulsion. ...
0
votes
1answer
571 views

Bond angles in BrF5

If in an octahedral structure there is one lone pair placed on any two of the axial position then will the lone pair distort all the 90 degree angles due to repulsion from lone pair or the angles will ...
0
votes
1answer
65 views

What is the correct structure for sulfur dioxide?

A question from the National Chemistry Olympiad (Germany-2008) goes as follows: Besides the composition of a substance the structure of its molecule or ion is of interest. To predict the structure ...
0
votes
1answer
55 views

Small doubt regarding bulkier molecule having more probabilty of reaction [closed]

I have heard a theory from someone and just wanted to confirm if its true or not. Is it true that more bulkier an organic compound is, more likely it is to react? So does this mean that higher the ...
16
votes
1answer
232 views

Is there any experimental evidence for OClF5?

On page 88 and 89 of this document, the author laments that $\ce{OClF5}$ has still not been discovered. He says it would be "just about the ultimate possible storable oxidizer" (for rockets). (Note: ...
10
votes
2answers
237 views

Why are noble metals more electronegative then most metals?

I was researching about electronegativity when I looked up what a graph of electronegativity within the periodic table is. And, this appeared. I scanned it, matching up everything I knew about the ...
7
votes
0answers
71 views

Carbides of different elements

What property of the elements makes them forms different types of carbides like: $\ce{Be}$ and $\ce{Al}$ - $\ce{Be2C}$ and $\ce{Al4C3}$ (Methanides) contains $\ce{C^4-}$ ion $\ce{Na}$ and $\ce{Ca}$ ...
-1
votes
1answer
120 views

What is the structure of NO2-?

I know that NO2 has 3 effective pairs, so it is likely to have trigonal planar structure. In trigonal planar structure we usually see three atoms bonded to central atom at 120°. But in NO2-, I ...
9
votes
1answer
189 views

Stable natural helium hydride?

Reading the transcript of the Royal Society of Chemistry podcast Helium Hydride, they state that helium hydride is possibly the most ancient compound to form in the Universe. They make the assertion ...
3
votes
2answers
499 views

Is there any way of representing a dative/coordinate covalent bond?

I was wondering if there was any way of representing a dative/coordinate covalent bond on a chemical diagram. A single bond can easily be represented as a single line, a double bond as a double line ...
7
votes
2answers
649 views

Why are pi bonds only formed when sigma bonds are formed?

While studying about bonding there was one statement that "pi bonds can only be formed only with sigma bonds" as we know that in double bond there is 1 sigma bond and 1 pi bond but then one question ...
3
votes
1answer
111 views

Will selenium react or bond, ionic or covalent, with vanadium?

I was recently asked if $\ce{Se}$ will bond with $\ce{V}$, creating a compound $\ce{SeV}$ . I am not sure if this is even possible but if so I'd like to find out.
2
votes
1answer
100 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, ...
22
votes
1answer
2k views

Can 100% covalent bonds exist?

Every covalent bond has some ionic character and every ionic bond some covalent character. I can understand why a completely ionic bond is an ideal situation. But completely covalent bonds can ...
1
vote
1answer
96 views

Electron transfer in reaction between ammonia and hydrochloric acid

$$\ce{NH_3 + HCl -> NH_4Cl}$$ The electronic structure of ammonia is such so that the nitrogen atom has an outer shell with a lone pair of electrons. When ammonia reacts with hydrochloric acid ...
7
votes
1answer
703 views

Does water ionically bond to chloride ion?

This user absolutely insists that when a chloride ion is present in water (for example, when $\ce{NaCl}$ dissolves in water) that $\ce{Cl-}$ ion is ionically bound to the hydrogen atom: ...
6
votes
1answer
186 views

Why are there more fluoride compounds formed with Xenon?

Based on WebElements, of the Noble Gases, $\ce{He}$ and $\ce{Ne}$ do not react with any of the halogens; however: $\ce{HArF}$ has been detected at low temperatures (thank you to @bon and @Martin in ...
10
votes
2answers
499 views

How come there aren't any silicon analogs of alkenes or alkynes?

We know that there are silicon analogs of alkanes, but according to Wikipedia, silicon analogs of alkenes or alkynes are virtually unknown. How come?
1
vote
0answers
24 views

What makes a metal more inclined to bond covalently? [duplicate]

Many metals form compounds with s-block elements that are essentially entirely ionic. However, elements like silver, copper, lithium and so on, can form bonds that are significantly covalent in ...
2
votes
2answers
135 views

Can covalently bonded hydrocarbons be influenced by a magnetic field?

I am doing a University project on Magnetically Assisted Combustion and am curious to know more about how magnetic fields may or may not affect gases such as butane and propane. I think I am right ...
4
votes
0answers
183 views

Why does Silver form bonds with covalent character?

Compounds of silver form particularly strong bonds which is accounted for by the significant covalent character of the bonding. Furthermore, is the tendency to form covalent bonds linked to the fact ...