Calcium electron configuration. Illustration of the atomic structure and electron configuration of the element calcium. An atom of this element has 20

---

Calcium electron configuration. Illustration of the atomic structure and electron configuration of the element calcium. An atom of this element has 20 electrons (black dots) in four shells around the nucleus. There are two electrons in the first shell (both in the 1s orbital), and eight electrons each filling both the second shell (the 2s and 2p orbitals) and the third shell (the 3s and 3p orbitals). Finally, there are two electrons in the fourth shell (the 4s orbital). The electron configuration is 2,8,8,2. The isotope shown here is calcium-40, with a nucleus of 20 protons (red) and 20 neutrons (blue). All isotopes of an element have the same electronic structure.

---

Size: 4961px × 3543px
Photo credit: © ANIMATE4.COM/SCIENCE PHOTO LIBARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, 1s, 2p, 2s, 3p, 3s, 4s, atom, atomic, background, calcium, calcium-40, chemical, chemistry, configuration, diagram, educational, electron, electronic, element, elemental, fourth, graphic, illustration, isotope, neutrons, nucleus, orbital, orbitals, physical, protons, school, science, shell, shells, structure, white