electron shell

• Région autour du noyau atomique où les électrons ont la plus forte probabilité de se trouver, organisée en niveaux d'énergie ou orbitales.

The region surrounding the nucleus of an atom where electrons are most likely to be found, organized into energy levels or orbitals.

1. Atomic structureC1formal

   A region surrounding the nucleus of an atom where electrons are most likely to be found, organized into energy levels.

   couche électronique

   • The first electron shell can hold up to two electrons.
   • Electrons in the outermost shell determine the chemical properties of an element.
   • When an atom absorbs energy, an electron can jump to a higher electron shell.