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Aufbau principle
Nature prefers low energy. It is thus energetically favorable to do so.
The aufbau principle is a method for determining the electron configuration of an element. It shows how the various orbitals must be filled in correct sequence to show how ionization may occur. For selenium, the correct aufbau sequence is [AR] 4s2 3d10 4p4.
If you are referring to the Aufbau Principle, than I believe it was the Danish physicist Niels Bohr who discovered it around 1920. However, instead of being named after a person, it came from the German phrase Aufbauprinzip which literally translates to "building-up principle."
Each electron occupies the lowest energy orbital. Orbitals related to energy level are of equal energy.
Aufbau principle
The Aufbau principle states that electrons will fill up the different orbitals in an atom in order, i.e. the s orbitals of an atom will be filled by electrons before the p orbitals.
Nature prefers low energy. It is thus energetically favorable to do so.
The aufbau principle is a method for determining the electron configuration of an element. It shows how the various orbitals must be filled in correct sequence to show how ionization may occur. For selenium, the correct aufbau sequence is [AR] 4s2 3d10 4p4.
according to Aufbau principle
If you are referring to the Aufbau Principle, than I believe it was the Danish physicist Niels Bohr who discovered it around 1920. However, instead of being named after a person, it came from the German phrase Aufbauprinzip which literally translates to "building-up principle."
Bohr &Stoner suggested aufbau principle
Electrons always enter to the lower orbit first,this is called auf bau principle.
4f orbital
The electron configuration provided seems to be incorrect. The correct electron configuration for an element is based on the Aufbau principle, which governs the way electrons fill energy levels and sublevels. Double-check the electron configuration using the correct order of filling for orbitals.
Each electron occupies the lowest energy orbital. Orbitals related to energy level are of equal energy.
In general, you use the Aufbau Principle which indicates the order in which the shells and orbitals are filled. You just have to learn it and then you can determine the electron configuration of the elements.