Where a shell is not full, the atom can bond with another chemical species. In this way the valency of an atom describes how full the electron shell is and how readily bonds can form.

Furthermore, each atom can both lose and gain electrons, or, in other words, can function as possessing positive and negative valency.

In the new study, published Aug. 20 in the journal Physical Review Letters, the researchers accomplished this incredible feat ...

Valence electrons, located in the outermost shell of an atom, play an important role in driving chemical reactions and ...

Scientists used an ultrafast X-ray laser to follow the impact of a single electron moving within a molecule during an entire chemical reaction.

Alternatively, it may be said that the initial expansion of the silver lattice produced by one atom of the above elements is proportional to the valency.

Tokyo Tech researchers show dendrimers that mimic the electron valency of atoms can also mimic polymerisation yielding controlled one and two-dimensional arrays of nanocontainers.