# When electrons ocoupy different orbitals of the same sub-level, do they all have the same spin?

Sep 9, 2017

Only as single electrons in the orbitals of a partially filled sublevel.

#### Explanation:

An orbital can contain a maximum of two electrons with opposite spins. Each orbital in the same sublevel must have one electron with the same spin before a second electron with an opposite spin enters the orbital. When there are multiple orbitals in the same sublevel, such as the three $\text{2p}$ orbitals, $\text{2p"_x"p"_y"p"_z}$, each orbital receives one electron of the same spin. If there are more electrons than $\text{2p"^3}$, the additional electrons will enter each $\text{2p}$ orbital with an opposite spin.