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], [intermolecules-forces], etc.

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19 views

electron-muon bonding

Is bonding specifically for and between electrons and why cant 2 atoms share different particles of same charge , spin and different mass? Why there aren't muon - electron bonds or whatever? Why is ...
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Energy Levels of Molecular Orbitals formed by combination of Atomic Orbitals

In general when we talk about chemical bonding, we say that it is "nature's way to stabilize the systems" and the energy of the molecule formed by atoms will be lower than that of the individual atoms;...
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Metallic Bond Strenght [closed]

So I know that the strenght of the metallic bond increases as the size of the ions decreases, and that has to do with relativistic effects, right? But it's a little confusing as it increases the more ...
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64 views

Positively charged gases

Theoretically, if you could could have a positively charged gas say O$^+$ enclosed (by a sufficiently inert material) around a conductor which is grounded, what would the reaction be at the conductor ...
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1answer
34 views

C−H bond length in organic compounds [duplicate]

I am reading Fundamental concepts of organic chemistry by Dr. Anju Srivastava (12/04/2007). It shows that carbon-hydrogen bond in ethane is 1.1 Å long, in ethene it's 1.08 Å, and in ethyne it's 1.06 ...
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Polar Covalent Compound versus Nonpolar Covalent Compound [closed]

I understand that for a polar covalent bond a pair of electrons is unequally shared between two atoms and a nonpolar covalent bond occurs when two atoms share a pair of electrons with each other. ...
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22 views

What are the bonds in the Cl2H2? [closed]

what are the bonds created in Cl2H2? please show using lewis structure.
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Why does CO⁺ have bond order 3.5 instead of 2.5? [duplicate]

Why does $\ce{CO+}$ have bond order $3.5$ instead of $2.5?$ Please explain to me.
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1answer
27 views

Is activated charcoal an air purifier?

It's well known that activated charcoal is an adsorbent and due to very big surface area per unit of mass it can adsorb a lot of particles. Let's take as an example for my question this product on ...
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Why homolytic fission of polar molecules is possible at higher temperature?

While studying alkanes I came across the nitration of alkanes using Nitric acid at very high temperature, which apparently follows "free radical" mechanisms, by formation of OH° °NO2 free radical ! ...
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Can we break double bonds by using laser and heat?

If it is possible then give an example for it. That chemical reaction is in this process. step 1: {Reactant + heat(sunlight)} gives weakened bonded product1 step 2: {product1 + laser} gives {one solid ...
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Does bond strength necessarily vary inversely with bond length? [duplicate]

The σ-bond strength of p–p bond is stronger than s–s bond; then why is it that the bond strength increases with increasing s-character? Shouldn't $\mathrm{sp^3}$–$\mathrm{sp^3}$ be the strongest σ-...
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Free Electron-Bond Electron Interactions

I am reading an introductory textbook on electronics: Practical Electronics for Inventors by Paul Scherz and Simon Monk. In a section discussing the motion of electrons in circuits, the textbook ...
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1answer
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Ionization of hydrogens in hypophosphorous acid

Does anyone know why the hydrogen atoms bonded with phosphorus in $\ce{H3PO2}$ are not ionizable? I tried looking in high school level books, but they only describe the process, not the real reason. ...
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Lewis Structure of OF+

Would the Lewis Structure for OF+ be drawn so that the more electronegative atom has the more negative formal charge, or would it be drawn to satisfy the octet rule? Here are my thoughts thus far: ...
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1answer
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Predicting color of a TMB derivative affected by peroxidase

The ELISA test on HIV works by verifying the presence of peroxidase within samples. The verification process is done through the enzymatic reaction that said peroxidase has on TMB (3,3',5,5'-...
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Oxidation state of chlorine in ClO

Today, I had a friendly debate with my friend on what should be the oxidation state of $\ce {Cl}$ in the chlorine monoxide radical. I took the view that it should be $\ce {+2}$ while he took the view ...
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Sigma bond by combining two p orbitals

If I combine two p orbitals in such a way that they form σ bonds, which linear combination will represent bonding and antibonding? My work on this problem: $$ \begin{align} &\text{Bonding:} &...
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Is lithium carbide an ionic compound or covalent? [duplicate]

I read in my chemistry textbook that lithium carbide (Li4C) is the only carbide amongst alkali metals. As we know, carbides are ionic compounds, and calcium carbide is predominantly ionic (calcium ...
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207 views

Comparison of C-Cl bond length in CH3Cl and CF3Cl

Topic: Chemical Bonding (Application of Bent's Rule) Bent's rule is also consistent with Gillespie's VSEPR model, and may provide alternative rationalisation for effect of electronegativity. So it ...
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Bond length comparison in substituted phosphorus pentahalide

What would be the comparison between $\ce{P-F}$ and $\ce{P-Cl}$ bond length in phosphorus tetrafluoride chloride $\ce{PF4Cl}$ and phosphorus trifluoride dichloride $\ce{PF3Cl2}$ in the equitorial ...
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1answer
111 views

C=O bond length comparison among cyclohex‐2‐en‐1‐one and cyclohex‐3‐en‐1‐one

I can see that in the first case a resonance would occur, and in the second case, there would be no resonance effect. I have read the fact that resonance reduces bond length due to partial double bond ...
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1answer
66 views

Why doesn't hydrazine contain a double bond between two nitrogen atoms? [closed]

I know that the Lewis structure of hydrazine contains $\mathrm{sp^3}$ hybridized nitrogen atom but on analyzing it's structure I realized there are many bond pair and lone pair repulsions. Instead of ...
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Classic/killer/easy application for the deuterium kinetic isotope effect?

I'm a physicist. While visiting someone's o-chem class I learned about the existence of the deuterium kinetic isotope effect. This seems like an extremely sweet example of zero-point energy, and I ...
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1answer
144 views

Why are double bonds shorter than single bonds? [duplicate]

We're told in chemistry class that the order of bond length is: triple < double < single Can anyone explain WHY this is the case? Is it because multiple bonds involve stronger attraction ...
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1answer
62 views

Can atomicity be infinity? [closed]

My chemistry teacher told us that graphite or diamond had an atomicity of infinity. However, the definition of molecule in my testbook is A molecule is the smallest part of an element or compound ...
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Bond length in hydrogen chloride

The interatomic distances in $\ce{H2}$ and $\ce{Cl2}$ are $74$ and $\pu{198 pm},$ respectively. Find the bond length of $\ce{HCl}.$ a. $\pu{136 pm}$ b. $>\pu{136 pm}$ c. $<\pu{136 pm}$ ...
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How is it possible to melt diamonds? [duplicate]

On another thread on this website it mentioned how it was possible to melt diamonds, but what would be the micro-level occur for that to happen. This question applies to Silicon Oxide aswell. They ...
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1answer
73 views

How does resonance fail in approximating chemical structures?

In the book "Concise Inorganic Chemistry" by Prof. JD Lee, it says here: These contributing structures do not actually exist. The $\ce{CO3^2-}$ does not consist of a mixture of these structures, ...
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Hydrogen Bonding by Carbenes

A hydrogen bond is formed between hydrogen attached to highly electronegative atoms (nitrogen, oxygen, and fluorine) which are small in size too and the non-bonding pair of electrons of another such ...
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C-C bond lengths in hydrocarbons

We had a question in a rest comparing the bond lengths of hydrocarbons fluorides, and the answer key says CF3- CF3's supposed to have a longer C-C bond than H3C- CH2--F. Why is this so? Wouldn't the ...
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1answer
115 views

Why does bubbling carbon dioxide through calcium hydroxide result in a precipitate?

Why does the addition of carbon dioxide to calcium hydroxide create the precipitate calcium carbonate? What happens chemically for such a molecule to form? How exactly do their interactions come into ...
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35 views

Bond Dissociation Energy in Water [duplicate]

Why do the bond dissociation energies of the O−H bonds in water differ? Is it related to an increase in lone pair-bond pair repulsions upon the breaking of the first O−H bond (decrease in stability, ...
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51 views

Lewis structure and bond order of polyiodides

I am trying to draw the lewis structure of triiodide, pentaiodide and heptaiodide-anions. But I am not sure about them, especially not about the heptaiodide-anion (see image). The second question is,...
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2answers
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Basic bond strength concept

I saw C-H bond is stronger than C-C bond... Is this because of the following reasons? 1) C-H bond is shorter than C-C bond. 2) C-H bond is more ionic than C-C bond. I
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Is bonds in CO is all 3 coordinate bonds or 2 covalent and 1 coordinate bonds?

Below image is as available in India's Class 11 NCERT Chemistry book vol 1 Page 104. I am confused as it states all 3 bonds are kind of coordinate bonds. Should it not start with 2 covalent bonds and ...
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Bonding in Sulphur dioxide [duplicate]

In Concise Inorganic Chemistry by J.D.Lee (Adapted by Sudarsan Guha, Fourth Edition), on page 82, under section 3.8 - Types of Covalent Bonds (Sigma and Pi Bonds) it is given (for Sulphur dioxide ...
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1answer
69 views

Why is trichloromethane more acidic than trifluoromethane? [duplicate]

In Concise Inorganic Chemistry by JD Lee (4th edition; adapted by Sudarshan Guha), page 78 under the topic "Back Bonding" it is given: $\ce{CHCl3}$ is more acidic than $\ce{CHF3}$ which is ...
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137 views

Why is back bonding not possible in sulfur dichloride?

In Concise Inorganic Chemistry by JD Lee (4th edition; adapted by Sudarshan Guha), page 76 under the topic "Back Bonding" it is given: For $\ce{SCl2}$ the bond angle is 102° since the lone pair of $...
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94 views

Why are B-O-H and B-O-C angles in B(OH)3 and B(OCH3)3, respectively are higher than normal?

In Concise Inorganic Chemistry by JD Lee (4th edition; adapted by Sudarshan Guha), page 77 under the topic "Back Bonding" it is given: The $\mathrm{2p}\pi$-$\mathrm{2p}\pi$ back bonding in $\ce{B(...
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1answer
497 views

Dipole moment in NF3 versus NH3

The usual explanation for the molecular dipole moment of NF$_3$ being smaller than that of NH$_3$, despite the N-F dipole being stronger than the N-H dipole, is that influence of the lone electron ...
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215 views

Why is the dipole moment of XeF$_6$ zero? [duplicate]

In Concise Inorganic Chemistry by JD Lee (4th edition; adapted by Sudarshan Guha), page 73 under the section 3.6 (VSEPR Theory chapter Chemical Bonding): ...according to this theory, the position ...
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what is the bonding energy of I2 and I3-?

I need some information of bonding energy. I found that the bonding energy of $\ce{I2}$ is $\pu{151 kJ/mol}$ (https://www.chegg.com/homework-help/dimethyl-ether-ch3och3-ethanol-ch3ch2oh-constitutional-...
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1answer
71 views

Coordinate bonds between molecules

For the following question Which molecules react to form a dative/coordinate bond? A. $\ce{CH4}$ and $\ce{NH3}$ B. $\ce{C2H2}$ and $\ce{Cl2}$ C. $\ce{NH3}$ and $\ce{HF}$ D. $\ce{Cl2}$ ...
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1answer
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Does it sometimes take energy to create a chemical bond? [duplicate]

Wikipedia says so: Bonds can also be broken apart. Since most bonds require energy to form, they also give off energy when they are broken. But before most bonds break, the molecule has to be ...
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Why are sulfur trioxide and nitrate not isoelectronic, even though both have the same number of outer electrons?

Though $\ce{SO3}$ has the same number of outer electrons as $\ce{NO3-}$, the two are not isoelectronic. This statement is from JD Lee, but I could not understand why is he calling these two molecules ...
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Why do the d orbitals contract when pairing of electrons start, because the size should increase due to increase in energy

The energy of an orbital is proportional to its mean radial distance, and since the 3d orbital is much larger it is much higher in energy than the 3s and 3p orbitals All references from JD Lee ...
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78 views

Why does nitrogen molecule have greater ionization energy than nitrogen atom?

I am studying an article in my book that $\ce{N2}$ molecule has higher ionisation than $\ce{N}$ atom and I have no clue it may be because of strong triply bonded atom then why this is not applicable ...
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Plaster of Paris

One of my Chemistry professors said that the hard mass formed after adding water to Plaster of Paris, cannot be converted back into Plaster of Paris. However, he said that the original Gypsum can be ...
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2answers
66 views

Bonding in the nitrate anion [duplicate]

Hi so I was studying chemical bonding where i encountered a problem which is stated below. When we talk about ${NO_3}^-$ we draw its structure as following But the thing which I dont understand is ...