Respuesta :

The electron configuration of a neutral sodium atom is 1s22s22p63s1 .

In the case of sodium the one lone electron in the 3s valence shell would easily be released in order for sodium to have a filled valence shell at 2s22p6 .

Therefore , the electron configuration of the sodium ion is
1s22s22p6 .

Explanation:

According to Aufbau's rule, in the ground state of an element, electrons start to fill atomic orbitals from the lowest energy level before they occupy higher energy levels.

Electronic configuration is the distribution of electrons in the atomic orbitals of an atom.

Atomic number of sodium is 11 and its electronic configuration is as follows.

                   [tex]1s^{2}2s^{2}2p^{6}3s^{1}[/tex]  

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