Bonding Definition and 185 Threads

Chemical bonding force. Help me understand how chemists describe this force! So one proton has a positive charge. One electron has a negative charge. When we bring them together, that makes one hydrogen atom. The positive proton and the negative electron cancel each other out. Perfect! But...

Every water molecule is H-bonded with up to four other molecules (two through its two lone pairs, and two through its two hydrogen atoms. These 4 intermolecular hydrogen bonds are what contribute to water's high boiling point.. My textbook compares this with Fluorine, which it says can...

So far we've learned that ionic bonding is between metals and non metals, now we are learning about covalent bonding, so far it seems that covalent bonding is only between non metals. Is this true?

Hi all, Currently, I'm reading the paper: Direct to indirect band gap transition in ultrathin ZnO nanowires under uniaxial compression [APPLIED PHYSICS LETTERS 94, 113114, 2009]. You can download this paper from the following url...

I have some questions about molecular bonding. I understand that intramolecular bonds (forces holding a molecule together) are stronger than intermolecular bonds (forces between molecules). I also understand that the strength of intermolecular bonds determines whether something is gas (no bond)...

When we stack orbitals we get bands. Bands result in bonding and anti-bonding. Now for Na his s band is half full resulting in the top half to be conductive shell of anti-bonding orbitals. Take Mg for instance. So his s band is completely full. Why does it conduct ? Because, as I learned, p...

Hi there! I'm studying the hydrogen molecule. According to the MO technique I start from one-electron molecular orbitals to construct the wave function of the entire molecule. Afa hydrogen is concerned, I can construct two ^1\Sigma_g orbitals: \Phi_A=\Phi_g(1)\Phi_g(2)\chi_{0,0}...

I need to bond lead to Inconel? Is this possible? One method I thought about trying is to bond a second metal to the Inconel then bond the Lead(pb) to that> But what would be the steps fluxs and the like?

I've been wondering if atoms were lazy particles, because if Ionic bonding occurs when electrons are taken from one atom to another, and the electrostatic attractions between the oppositely charged particles keep them together, why is it that the covalent bond doesn't go ahead and switch the...

Are elements able to form a wider variety of molecules at lower temperatures vs say 20oC?

Hello; I don't understand the symbols drawn on this diagram; http://upload.wikimedia.org/wikipedia/commons/8/8e/Wasserstoffperoxid.svg I understand that the bond between the two oxygen atoms is a single sigma bond (illustrated by a -), but what are the bonds between the oxygen and...

This at first may sound like a question based in chemistry, but I feel it is more of a particle physics question. When a chemical reaction occurs, it can be exothermic or endothermic. It is my understanding that if bonds are formed, energy is released, and when bonds are broken, energy is...

Hello, I have been doing some research with self assembled monolayers. I was wondering if a molecule terminating in -OH was able to bond with a silicon wafer in atmospheric conditions?

Rank the following base pairs according to their stability. Rank from most to least stable. To rank items as equivalent, overlap them. ------------- I have found out that the first one is thymine-adenine pair and the second one is a cytosine-guanine pair. The third one is cytosine...

For inorganic molecules, is ionic or covalent bonding more common?

Homework Statement A) Potassium Methoxide, KOCH3 has both covalent & ionic bonds...Which are which? B) Why do you suppose no one has created a stable cyclopentyne molecule? C) How many electrons does a positively charged Carbon atom in a carbocation (C+H3) have? Why is it trigonal...

Is MO theory the most accurate model for atomic bonding we have so far? I've seen how it can be used to predict paramagnetism and diamagnetism but the idea of antibonding electrons and orbitals is seems fairly bizarre to me.

In chemistry I learned the bonding rules that I learned for various molecules never mentioned anything about the different energy levels in electrons. Now that I know electrons can have various energy levels from absorption of photons, I would like to know if this changes the behavior of...

What spray glue to bond Polyurethane foam or urethanes? I’ve tried using several products but they just don’t work.

a-) In 1954 Linus Pauling was awarded the Chemistry Nobel Prize for his work on the nature of the chemical bond. Covalent bonds are one example of intramolecular bonding. Explain the formation of the following: i) \sigma (sigma) bonding ii) \pi (pi) bonding iii) double bonds iv) triple...

Homework Statement If removing electrons from atoms requires energy, and adding electrons to atoms usually liberates energy, then why is energy liberated when the ionic compound NaCl forms from the elements sodium and chlorine?Homework Equations NoneThe Attempt at a Solution My solutions manual...

The bonding in diborane is unique as it involves two 3c-2e bonds. Most books show the overlapping as between two sp3 orbitals of B atoms and s orbital of H atom.But the bond angle between the terminal H atoms and central B atom is 120, as if the B atom were sp2 hybrid. Any ideas?

Did anyone here ever successfully wire bond Chromel, Manganin, Konstantan or some other such material with low ductility? What is the key to success here? Pad temperature? Pressure? Power? Is gold still the best pad material? I heard also the needle makes a difference?

I posted this elsewhere but I wasn't sure if physics people were lurking on the chem forum. I want to understand MO and LCAO. The chapters in Levine weren't enough. Are there other books on bonding that people know of?

Homework Statement Ignoring any orbitals not in the valence shell how many orbitals are in each of the following molecules? How many are bonding, nonbonding, and antibonding? How many orbitals are occupied? Co2Homework Equations The Attempt at a Solution The answer it gives in the book is 4 of...

If an electron follows the quantum mechanics wave model then how does it undergo bonding? I don't understand how electron transfer occurs in bonding with the wave model. It is simple as explained by the point model but I just don't see the other case based on electrons as a wave?

Methemoglobinanemia is when the iron atom in the heme group of hemoglobin is oxidized to the +3 state. In this oxidation state, the heme group is unable to carry oxygen. Why is this? A ton of the sources I have come across explain the condition of methemoglobinanemia and simply say that the...

Does anybody know how to find bonding force of an optical electron and the nucleus of ion Cr3+ (in pink ruby during normal and excited states (excitement of light))? And also how to find the magnetic moment of the same electron during EPR (during excitement by a radiowave)? Condition of the...

Ok I understand that O2 wants to have a stable number of electrons for its period which is 8 and so it shares two pairs of electrons. But what about S8. I thought it would form S2. Why is it forming S8, what is the logic. Cheers Damian

This is probably something I should know, but I don't want to wait and ask my professor. In the combustion of H2, assuming O2 is plentiful enough not to be a limiting reactant, H2O forms as a result of the O-H bond being more stable than the bonds between two H or two O. Is this due to the...

Hi, Would somebody know if it is possible to bond pvdf piezoelectric material on glasse or teflon without making it losing its piezoelectric properties? Thank you! Damien

Anyone aware of the Physics of Hydrogen Bonding ?? Please suggest resources ! Hi everyone, Am a grad student doing experimental research in an interdisciplinary lab of nanoscience - I am using the concept of hydrogen bonding in some of my experiments. I am planning to...

When Carbon double bonds to another carbon, does one of each's electrons move like this? http://img27.imageshack.us/img27/4566/bondb.jpg

Homework Statement The following structures illustrate hydrogen bonding interactions between amino acid side chains and/or backbone atoms within a protein structure. In which of the following figures are the structures and hydrogen bonding completely correct? Homework Equations...

the temperature for the following to reach a pressure of 100mmHg is as follows(celcius)) HI -> -72.1 HCl -> -114 HBr -> -97.7 HF -> -28.2 how can this be? since they are all combinations of H and an element of the last column before the noble gas surely the smaller the size of the...

Electrical "bonding" in high voltage line maintenance Consider a high voltage line worker about to exit a helicopter on to a high voltage "live" line, as in this video : As the helicopter approaches the HV line, the worker holds out a conducting rod. I am led to believe this is to...

hydrogen bonding with NH3 please.help.ASAP! Homework Statement NH3 is a donor & acceptor of hydrogen in hydrogen bond formation...Draw a diagram to show the H bonding of an ammonia molecule w/2 other NH3 molecule. Homework Equations The Attempt at a Solution this is waht i...

Hello, I'm trying to figure out how to seal a circuit as described in this thread: https://www.physicsforums.com/showthread.php?p=2068433&posted=1#post2068433 My question to you chemical engineers, do you guys know of any sort of bonding material (like epoxy) which will not dissolve in...

I'm a new Gaussian 03W user and I have what I assume is a pretty basic question. How does Gaussian "know" how atoms are bonded to each other when a molecule is specified in an input file. An example molecule specification in Cartesian coordinates follows: 0 1 C 0.00 0.00...

I know what Covalent bonding is... and i know what bonding order is. I couldn't think of anything where there is a triple bond or higher... I just wanted to see if anyone could come up with a few examples. Thanks~ ^_~

Does anyone know firstly what this type of formula is called: H-H, i know that it describes the bonding but can't remember what it is called :O Secondly, how would i show the bonding in aluminium oxide usingthis type of formula?

1. Why do anions, such as the chloride anion, increase in size when they achieve a full valence electron shell? This does not make sense to me because there is no new shell that is added. 2. How would you name ionic compunds involving polyatomic ions? My book says that (NH4)2CO3 would be...

When individual atoms bond to form a metal lattice, the total energy decreases, but does the kinetic energy of the electrons increase or decrease? What about the potential energy? Does it increase due to pauli exclusion or decrease due to the decrease in distance between the ion and electron...

[SOLVED] Hydrogen bonding Which types of bonding are present in CH3CHO(=ethanal) in the liquid state? I. Single covalent bonding II. Double covalent bonding III. Hydrogen bonding A. I and II only B. I and III only C. II and III only D. I, II and III The solution is A but I can not...

Homework Statement The concentration of Ca2+ in hard water can be determined by titration with a reagent X which forms a complex with Ca2+ giving a change in colour. Since the colour change is sensitive to pH, the titration has to be carried out in an alkaline buffer. Th structure of X is...

Homework Statement QUESTION: Methane (CH4) is a gas at room temperature and pressure while water is a liquid. In both molecules hydrogen atoms are bonded to a non-metal element. Water also has a much higher heat of vaporization than methane even though the molecular weights of these two...

[SOLVED] directional bonding I was wondering how I could determine if a molecule has directional bonding or non-direction bonding? Is it determined by the shape of a molecule?

[SOLVED] Ambiguous bonding question Like I said it's just an ambiguous bonding question. Non-bonding pairs of electrons 1. Create repulsions with other bonded atoms and other non-bonded pairs of electrons. 2. Do not influence molecular polarities because they are not involved in the...

CF4 is it 109.5 degrees for the angle NH3 109.5 degrees for this angle SO4^2- 109.5 for this angle NH4+ 109.5 degrees for this angle H2S 180 degrees for this angle PO4^3- 109.5 degrees for this angle HCl 180 degrees for this angle NF3 190.5 SiH4 190.5 BF3 190.5 C2H6 190.5 C2H4...