Sentences with phrase «bonds between atoms in»

Elementary chemistry distinguishes two kinds of strong bonds between atoms in molecules: the covalent bond, where bonding arises from valence electron pairs shared between neighboring atoms, and the ionic bond, where transfer of electrons from one atom to another leads to Coulombic attraction between the resulting ions.

Not exact matches

Because the carbon atoms in a C36 fullerene must strain to form a sphere, the bonds between atoms are brittle; thus, the molecule is very reactive and quickly decomposes in air.

At this temperature, the pressure in the reactor reaches 34 atmospheres, helping to break down the bonds between the hydrogen and carbon atoms in the polymer chains.

«We then studied the chemistry of these materials in greater detail and calculated the energy that would be needed to separate the layers, focusing primarily on materials where interactions between atoms of different layers are weak, something known as Van der Waals bonding,» says Marco Gibertini, a researcher at THEOS and the second author of the study.

In parallel work, Mikhail Eremets of the Max Planck Institute for Chemistry in Germany found a novel bond between atoms of nitrogen, the most common element in Earth's atmospherIn parallel work, Mikhail Eremets of the Max Planck Institute for Chemistry in Germany found a novel bond between atoms of nitrogen, the most common element in Earth's atmospherin Germany found a novel bond between atoms of nitrogen, the most common element in Earth's atmospherin Earth's atmosphere.

The zirconium sapped the loyalty of the electrons bonding the nitrogen pairs, weakening the link between the two atoms and letting hydrogen weasel in and latch onto the nitrogen.

He has spent his career focused on just one bond, a link between a carbon and a hydrogen atom in a molecule of methane, the main component of natural gas.

The proof was the absence of frequencies that had been absorbed by vibrations in the bonds between the three atoms.

So the team tried a heating technique to strengthen the bonds between the carbon atoms in the keratin.

«They behave much like enzymes do in living organisms, breaking down the bonds between carbon and oxygen atoms.

Analysis of phase - change materials showed that they work because of a particular kind of chemical bonding, called resonant bonding — a type of bond in which electrons flip back and forth between several adjacent atoms.

In contrast to previous methods, the bond between the oxygen atom at the tip and copper base is particularly strong, thereby reducing imaging artefacts to a minimum.

The chemical feature that enables this suppression is a bond between two oxygen atoms — an unstable peroxide bridge that releases a tiny barrage in the form of free radicals (unpaired electrons) that can fracture parasite proteins the way an F5 twister tears apart barns.

The most detailed images yet made of the chemical bonds in a molecule show what large - scale models had long assumed: the more electrons that two atoms share, the shorter the bond between them.

It turns out that the answer lies in the interaction between the bonds that hold the atoms in the water molecule together and the much weaker bonds, known as hydrogen bonds, that are the glue holding groups of water molecules together.

«In a crystal, the distances between lattice atoms and the angles made by the segments bonding the different atoms are always the same.

The unpaired electron naturally seeks another and finds a convenient target in the double bond between the carbon atoms in the ethylene molecule.

In 2009, Gross and colleagues imaged the individual bonds between the atoms of a molecule for the first time.

«We chose to selectively excite the double bond between the carbon and oxygen atom of acetone into oscillation and analysed the responses in detail,» explains Annette Pietzsch.

By producing alternating layers weakly bonded between one another, each consisting of a single layer of atoms, this new material could serve as the elements of gates and other components in new, miniaturised 2D semiconductors.

BOND OF LIFE A link between nitrogen and sulfur atoms (bond shown in green) helps hold together protein strands (yellow and white) that create a cellular scaffold essential for tissue and organ formatBOND OF LIFE A link between nitrogen and sulfur atoms (bond shown in green) helps hold together protein strands (yellow and white) that create a cellular scaffold essential for tissue and organ formatbond shown in green) helps hold together protein strands (yellow and white) that create a cellular scaffold essential for tissue and organ formation.

Using the same technique, a few years later they succeeded in distinguishing different types of chemical bond between carbon atoms in a hydrocarbon molecule.

For example, the hydrogen bonding interaction between the phenolic — OH and the o - methoxy groups in curcumin influences the O - H bond energy and H atom abstraction by free radicals, thus making it a better scavenger of free radicals compared to other curcuminoids such as BDMC.

The bonds between two atoms in a molecule are particularly strong, and can only vibrate at very high frequencies (emphasize frequencies over energies) well above the frequency of infrared or the solar radiation spectrum.

Fossil fuels store useful energy potential in bonds between carbon atoms.