Hydrogen atoms are close together. The electron from each atom feels the attraction from the proton in the nucleus of the other atom. This attraction pulls the atoms together and the electrons are ...

Save guides, add subjects and pick up where you left off with your BBC account. The slideshow shows a covalent bond being formed between a hydrogen atom and a chlorine atom, to form hydrogen chloride.

Sucrose has many O–H bonds which are polar. These polar areas are shown with a + near the hydrogen atom and a − near the oxygen atom. The second space-filling model shows two sucrose molecules held ...

Electronegativity is defined as the tendency of an atom to attract electron density, i.e., to polarize the chemical bond. The most widely used scale is the thermo-chemical Pauling’s scale, where ...

developed a novel strategy to stabilize *COOH intermediate and enhance electrochemical CO 2 reduction by constructing and modulating the hydrogen-bonding microenvironment around catalytic sites.

In this diagram of methane (CH₄) the chemical bond between atoms is shown as a stick. One molecule of the compound methane is made from one carbon atom and four hydrogen atoms. The black ...

Get Instant Summarized Text (Gist) Simulations indicate that space dust, modeled by C 60 fullerenes, can catalyze the formation of molecular hydrogen by enabling hydrogen atoms to bond on its ...

More information: Yuzhen Guo et al, Ab-initio dynamic study of mechanisms for dust-mediated molecular hydrogen formation in space, Communications Chemistry (2025). DOI: 10.1038/s42004-025-01489-z ...