For main group elements (s- and p-block elements), the group number corresponds to the number of valence electrons. For example, carbon (C) is in Group 14, so it has 4 valence electrons.

A group of researchers from Ehime University investigated valence electron configurations using light, expanding on prior studies of superconductors and quantum spin liquids. The findings were ...

The column, or group, signifies the number of electrons in the atom's outermost shell; these are called the valence electrons, and they are the electrons that can chemically bond with valence ...

The distribution of outermost shell electrons ... experiments at SPring-8, the group discovered that it is possible to selectively extract only the valence electron density of atoms in a crystal.

However, there have been only indirect investigations of the spectra of Auger electrons emitted as a result of the filling of valence holes in solids 5,6. A similar process involving the filling ...