Questions tagged [bond]

For questions about chemical bonds (ionic/covalent/etc.), their properties (length, energy, angle, etc.) or their relation to other molecular properties (intermolecular forces/dipole moment/etc.). Do not confuse this tag with [lewis-structures], [dipole], [intermolecular-forces], etc.

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31 views

confusion about london forces [closed]

It says in my book CHCL3 has both induced dipoles and permanent dipoles. The first part makes sense but not the second. How could london forces exist in this molecule if it has partial positive and ...
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1answer
45 views

How to break bonds of tea on a curtain? [closed]

If I throw tea on my curtain , it looks as if the curtain has absorbed tea molecules but is it true to say that since matter has spaces between them.So these tea molecules go into that space and stick ...
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How is [AlF6]3- formed? [closed]

So I was just looking at the orbitals and expanded octet concepts of Al. And I'm not able to understand how Al uses the d orbitals to form this compound... Could someone explain this to me using the ...
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determining bond length [duplicate]

how to determine this ? why cant we consider the sterric hinderance which is leading the bond length to increaseas then the atoms will tend to move far apart from each other also we can consider the ...
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0answers
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Electrovalent bonding [closed]

during electrovalent bond,for example magnesium sulphate magnesium donates two electrons it can be taken up by two sulphate atoms one each.why both electrons go to single sulphate atom from single ...
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33 views

IR active and inactive C-H stretching

I have two molecules, ethane (CH3-CH3) and 1,1,1-Trichloroethane (CH3-CCl3) and I need to determine if the C-H stretching vibrations for both molecules lead to a net change in dipole moment, and would ...
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0answers
20 views

Type of bond broken in electrolysis of water and sublimation of iodine [closed]

I have to do an exercise for class, and they ask me to explain the type of bond broken in electrolysis of water and sublimation of iodine. I really don't know what to write, I Google it, read some ...
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Can someone help me figure out why I got this roman numeral wrong?

I am currently working on a Roman numeral practice in Chemistry and I am stuck on a question. I was wondering if someone could help me. The question: What is the chemical name of Fe2SO3? My answers: ...
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Help determining normalisation constant in SALC of methane

We have been told that a symmetry adapted combination of four hydrogen orbitals is used to create localised hydrogen orbitals for methane. These orthonormal combinations are denoted ψa1, ψt’2, ψt’’2 ...
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1answer
58 views

Why does matter have spaces between them? [closed]

If you mix sugar Crystal in a glass of water and mix it well, the level of water will not rise.The reason they say is that matter have spaces between them.If matter have spaces between them , How ...
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1answer
43 views

Is iron(iii) hydroxide equivalent to hydrated iron(iii) oxide? [duplicate]

Are the chemicals $\ce{Fe(OH)3}$ and $\ce{Fe2O3⋅3H2O}$ equivalent? They are both network solids and have the same empirical formula but I know that doesn't always mean they are structurally the same.
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The structure of trisilylamine

Is it correct to say trisilylamine is planar, since hydrogen atoms are out of plane?Need we consider only nitrogen atom and three silicon atoms to say structure here?
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1answer
87 views

Lewis dot structure of H3NF2 [closed]

Consider a hypothetical compound $\ce{H3NF2}$. What will be its Lewis dot structure? I'm stuck, since Nitrogen cannot exhibit pentavalence, or at least its not stable (unlike phosphorous in $\ce{H3PF2}...
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Is O2+ more paramagnetic than O2-?

I know O2 is more paramagnetic than both O2- and O2+, these because it has two parallel spin electrons in the Molecular Orbits whereas in there is one electron hence lower paramagnetism as compared ...
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1answer
31 views

Bonding in d10 metals such as Zn

I recently learned about the MO bonding model in metals, where many metal atoms form lots of orbitals close in energy that form bands. However, I can't understand the bonding in d10 metals. It seems ...
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1answer
326 views

Why are square planar molecules drawn from the side plane as opposed to the top plane?

Simply put, why can't you draw square planar molecules top down (so you don't have to use depth bonds)?
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1answer
46 views

Why do certain compounds dissolve in oil? Why do some types of compounds dissolve in oil, yet not water? [duplicate]

Sorry if this is an obvious answer. I tried rewording this question every way I could, but search engines came up with nothing- they all skirted around this exact question. Why do certain compounds, ...
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2answers
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In the DNA backbone, which bonds exactly are considered ester bonds?

Following are the three different answers to this question that I reached by googling. Which of them is right? The covalent bond between the 3' C and the O, and the covalent bond between the 5' C and ...
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2answers
50 views

About covalant bound for molecule : repulsion of electrons?

I try to understand, from the electromagnetic side only, how the molecule could be more stable than each atom, and concluded that it could not. Where is my mistake ? Here is an illustration : By using ...
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1answer
27 views

Type of diagram and ordering of bonds used to depict a glucose molecule

I find these type of diagrams easier to consult when building molecules using a 'molecular building kit'. Is there a name for this type of diagram? For the glucose molecule (in the above diagram), I ...
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1answer
37 views

Alternative explanation of ethene's pi bond [closed]

This tutorial about ethene's bonds has the following paragraph that I hope someone can paraphrase in a better way: The pi bond dominates the chemistry of ethene. It is very vulnerable to attack - a ...
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2answers
69 views

Can H+ ion exist independently? [duplicate]

Can H+ ion exist independently since it does need to form any bonds.Why do we say that it needs to be in H30+ ion form?
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Misconception in valence bond theory

Since the overlap increases with directional properties of orbital, $$\ce{p - p > s - s > s - p}$$ However it is also observed that the bond strength of $$\ce{H-F > H-H > F-F}$$ $$\ce{\{s ...
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1answer
42 views

Are pi bond like like interactions possible when substituents in a compound are not directly connected? [closed]

identify the more acidic compound (and the answer is the III is more acidic than II ). My reasoning: Consider II compound, we have oxygen attached to the carbon forming a sigma and a $\pi$ bond, this ...
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1answer
52 views

Reference Request - bond lengths in PCl2F3

While writing an answer here, I needed references for bond lengths of $\ce{PF3Cl2}$ and $\ce{PF4Cl}$. The latter was easily found in reference (1), whereas I could not find exact references for bond ...
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1answer
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How does a body lose electrons? [closed]

If there is a Na and cl in solid form , There will be atoms inside of them.How do they lose electrons ?.We know solid body has a structure and covering.Just like you can touch is the covering of table ...
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37 views

Comparison between Molecular Orbital Theory and Valence Bond Theory

I have been reading about introductory Molecular Orbital Theory lately. Till now, I have used Valence Bond Theory to evaluate bonding. I have a few questions about it:- In VBT, we used the idea that ...
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1answer
27 views

Solving detergent powder in a solution

I used a detergent powder mixed with water to clean my espresso machine. Some micro particles of powder are stuck into machine's inner tank. So when I pull the hot water out of the machine's nozzle, ...
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1answer
38 views

If Electronegativity of Cl is greater than H2 then why is the bond angle of Cl2O greater than H2O? [duplicate]

If Electronegativity of Cl is greater than H2 then why is the bond angle of Cl2O greater than H2O? Cl2 has more EN than H2 and size of Cl2 is more than H2 but if we go according to EN then more angle ...
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1answer
76 views

Average bond energy of H−F and H−O hydrogen bonds

Which of the following hydrogen bonds (shown by the dotted line) has the highest average bond energy? A) $\ce{F-H\bond{...}F}$ B) $\ce{F-H\bond{...}O}$ I am thinking the answer is $A$ since the ...
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1answer
81 views

Finding the chemical formula for an ionic compound made using iridium and nitrite ion [closed]

What is the most likely chemical formula for an ionic compound involving the elements iridium and nitrite? The charge on the polyatomic ion $\ce{NO2}$ is $-1$, whereas $\ce{Ir}$ is a transitional ...
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2answers
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Can single molecules of C and O2 react in isolation, and if so how will momentum be conserved?

I am trying to figure out how is it possible to reconcile the reality of exothermic reactions, which means that kinetic energy is transferred to (heats) the surrounding matter, with the principle of ...
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1answer
60 views

But what are anti-bonding pi-orbital? In search for an intuitive explanation [closed]

Imagine that you want to explain to an undergraduate why they have to to shade the pi-orbitals in a symmetrical way, i.e. dark on top (+), white on bottom (-) for two neighbouring pi-orbitals because ...
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1answer
22 views

How does the position of hydroxyl group in a nucleotide monomer affect the dehydration synthesis of nucleotides?

In dehydration synthesis of nucleotides, the hydrogen atom from the 3' carbon on the deoxyribose sugar of one nucleotide reacts with the hydroxyl group on the phosphate group of another nucleotide to ...
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1answer
53 views

Is hypervalency a real thing? [duplicate]

I saw a proper debate going on between answers to a question about whether the octet rule could be violated. Some people were pointing to hypervalency in period 3 elements, due to the available d-...
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Why is it rational that salt-bridges (in proteins) are described as a combination of H-bond and ionic bond?

This is a fundamental question that came to me as I was trying to draw the electrostatic attraction between Aspartate (D) and lysine (K). I have always considered the charge on nitrogen, in the lysine ...
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1answer
65 views

Can a metallic bond with a sea of electrons form inside the human body? [closed]

I’m interested if atoms or ions can for a metallic bond inside the human body? I’m talking about a metallic bond as described here: https://www.britannica.com/science/metallic-bond So I’m thinking of ...
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1answer
64 views

Contradiction of general rules of bond character [closed]

The rules the ionic character of metal halides of halogens is given in order $\ce{MF > MCl > MBr > MI}$. While judging polarisability we say that a compound that has large cation and small ...
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1answer
70 views

Is it possible for already charged metal ions to form a metallic bond? [closed]

I would like to know if it is possible for already charged metal ions to become part of a metallic bond. I was thinking of a possible metallic bond formation with other already charged metal ions or a ...
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0answers
50 views

Metal coordination in enzymes: What type and number of bonds form between amino acid residues and Fe(II)?

My understanding: Transition (d-block) metals, as found in intracellular proteins, are limited to about 10 elements including amongst others Fe, Ni, and Cu. Due to the reductive environments inside ...
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1answer
47 views

In metallic bonding, what causes a metal to lose its outer electrons and become an ion? [duplicate]

In metallic bonding, what causes a metal to lose its outer electrons and become an ion? I am trying to understand metallic bonding, atoms and ions.
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Can d(x²-y²) form π bonds with other p- or d-orbitals? [closed]

$d_{x^2-y^2}$ doesn't change sign when transformation of $x\rightarrow-x$ or when similar transformation with $y$ is made. However no such thing occurs with any p- or d-orbital. Thus, can we say that $...
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1answer
45 views

bonding in polar covalent bonds

I have recently learned that pure ionic and covalent bonds are just the extremes of a spectrum of bonds from this article from Chemguide. But I can't seem to square this with my understanding of how ...
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1answer
87 views

Backbonding in phosphorous pentoxide

I read this today in a book that $\ce{P=O}$ in $\ce{P4O10}$ consists of a coordinate bond and pπ-dπ backbonding, but why does this happen? Can't phosphorus share its lone pair with one of the lone ...
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1answer
284 views

Which of the following has a stronger hydrogen bonding: F-H- -O or F-H- -F?

I thought of two approaches to solve this question . Since the electronegativity of Oxygen is lower than Fluorine it would be a better donor than Fluorine to the electron deficient Hydrogen . Another ...
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1answer
43 views

What is exposed in the surface tension of water?

(I guess) I understand the covalent bonding of water and the hydrogen bonding of water between two different molecules, but I would like to know which part is the part that that exposes itself to the ...
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2answers
58 views

Why do atoms on the periodic table have the number of valence electrons that they do?

I'm studying year 11 and am learning about valence electrons and how these electrons drive intermolecular bonds. What I have not been able to find an explanation to is why all the elements on the ...
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25 views

Dipole moments of cis and gem alkenes [duplicate]

The procedure for comparing dipole moments for cis- and trans-alkenes is quite easy, but how to compare dipole moments of 1,1 dichloroethene (1); and cis-dichloroethene (2)? My teacher told me that ...
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1answer
68 views

How to bond polymer to polymer (TPU on PMMA)

I wanted to bond TPU films to PMMA slab. I have tried thermal bonding but it is was not practical(I do not know why?). Can anyone please give me a method to bound them? Thanks
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253 views

why does lithium fluoride have a higher lattice energy than lithium iodide?

Based on my knowledge, lattice energy is proportional to the multiplcation of the charge of the ions, divided by the sum of the radius of ions, as follows. Since iodide has a larger radius than ...

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