A step-by-step description of how to write the electron configuration for Calcium (Ca).

In order to write the Ca electron configuration we first need to know the number of electrons for the Ca atom (there are 20 electrons). When we write the configuration we’ll put all 20 electrons in orbitals around the nucleus of the Calcium atom.

In this video we’ll use the electron configuration chart to help us write the notation for Calcium. Note that the last term in the Calcium electron configuration will be 1s2 2s2 2p6 3s2 3p6 4s2.

The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom. This makes it easier to understand and predict how atoms will interact to form chemical bonds.

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