Electron Configuration Of Calcium 20 . For example, the electron configuration of sodium is 1s 2 2s 2 2p 6 3s 1. Electron configuration chart for all elements in the periodic table.
The electron configuration of the chemical element describes the ground state, i.e. It looses its two electrons to acquire noble gas configuration. Calcium is the 20th element in the periodic table.
The s sublevels of the highest occupied energy level.
For example, the electron configuration of sodium is 1s 2 2s 2 2p 6 3s 1. This means that in a neutral calcium atom, there are 20 protons in its nucleus. When we write the configuration we'll put all 20 electrons in orbitals around the nucleus of the calcium atom. Calcium has 20 protons and electrons in its structure.