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.
The noble gas configuration for selenium is [Ar] 3d10 4s2 4p4, which means it has the same electron configuration as argon, followed by 4d10 4p4 electrons.
It is [Ar] 3d10 4s2 4p4
Selenium should gain two electrons and lose six electrons to achieve a noble gas electron configuration.
The noble gas electron configuration of selenium is [Ar] 3d^10 4s^2 4p^4 and for phosphorus is [Ne] 3s^2 3p^3. These configurations indicate how the electrons are arranged in the outermost energy levels of the atoms, resembling the stable electron configurations of noble gases.
The noble gas configuration for Sr (strontium) is [Kr]5s2
The noble gas configuration for selenium is [Ar] 3d10 4s2 4p4, which means it has the same electron configuration as argon, followed by 4d10 4p4 electrons.
It is [Ar] 3d10 4s2 4p4
Selenium should gain two electrons and lose six electrons to achieve a noble gas electron configuration.
The noble gas electron configuration of selenium is [Ar] 3d^10 4s^2 4p^4 and for phosphorus is [Ne] 3s^2 3p^3. These configurations indicate how the electrons are arranged in the outermost energy levels of the atoms, resembling the stable electron configurations of noble gases.
The noble gas configuration for Sr (strontium) is [Kr]5s2
[He] 2s1
The noble gas configuration for Cobalt (Co) is [Ar] 3d7 4s2.
The correct noble gas configuration for Li is neon (1s^2 2s^1).
Co is cobalt and is not a noble gas. Cobalt is a transition metal. Its electron configuration is [Ar]3d74s2.
The ground-state electron configuration for copper (Cu) using noble-gas shorthand is Ar 3d10 4s1.
The electron configuration and noble gas core for Li+ is that of He: Li+: (1s2, 2s0)
The noble gas configuration for Sr (strontium) is [Kr]5s2