The electrons are arranged according to the electron configuration.
In every atom, the electrons are present in their orbitals if their orbitals are vacant then we can arrange the electrons according to the s- p- d- f configuration.
The atoms only take that amount of electrons that are vacant in their orbitals after taking that much the atom gets neutralized and does not need more electrons.
Thus electrons are arranged according to the electron configuration.
To know more about electron configuration follow
https://brainly.com/question/11316046
