1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d³ or [Ar] 4s²3d³
Given
Vanadium, atomic number 23
Required
The electron configuration
Solution
In an atom, there are levels of energy in the shell and subshell
This energy level is expressed in the form of electron configurations.
Charging electrons in the subshell uses the following sequence:
1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s², etc.
The electron configuration is based on the atomic number which indicates the number of electrons of the atom
Vanadium has the atomic number 23, so the number of electrons = 23
Electron configuration:
1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d³
or we can write it using the noble gas notation
[Ar] 4s²3d³
