Hydrogen bonds are responsible for the lattice structure of frozen water, for example, and for joining the two strands of DNA’s double helix. Chemists know that some hydrogen bonds are stronger ...

The researchers deployed a special quantum effect called the two-photon spin-exchange Auger process to produce hot electrons far more efficiently than before. This process allows two low-energy ...

The ratio of each element is usually expressed by chemical formula. For example, water ... For example H2O is held together by polar covalent bonds. Sodium chloride is an example of an ionic compound.

And now, after years of work, they’ve finally explored an idea originally proposed in 1931: a chemical bond formed using just a single electron. This, of course, ...

From Nature magazine. An elite chemical club has a new member, after a team in Germany found a way to link two boron atoms together with a stable triple bond. Boron joins carbon and nitrogen as ...

Light-induced breakage of chemical bonds can lead to damage in the body and environment, but techniques for studying this photochemical reaction have been limited to before and after snapshots.

Higher; Chemical energy Bond enthalpies. Energy changes occur in chemical reactions as bonds are broken and new bonds formed. Enthalpy changes can be calculated from experimental data, and are ...