Electronic Configuration Using Aufbau Principle

The electronic configuration using the Aufbau Principle for a few elements is discussed below:

Electron Configuration of Sulphur

Atomic Number of Sulphur is 16, i.e. it has 16 electrons

Now using the Aufbau Principle the electronic configuration of the Sulphur is written as,

[S] = 1s² 2s² 2p⁶ 3s² 3p⁴

Electron Configuration of Nitrogen

Atomic Number of Nitrogen is 7, i.e. it has 7 electrons

Now using the Aufbau Principle the electronic configuration of the Nitrogen is written as,

[N] = 1s² 2s² 2p³

Aufbau Principle is the basic method that tells us how the electrons are filled in the atomic orbital. According to the Aufbau Principle, the filling of the electrons in the ground state of an atom follow a basic pattern. This principle tells us that the electrons in the atomic orbital of any atoms are filled in the ascending order of their energy and for finding the energy of the atomic orbital they follow the “n+l” rule.

In this article, we will learn about Aufbau Principle, Features of the Aufbau Principle, its exceptions and limitations in detail.