So orbitals are solutions to these wave equations. And since wave equations are simply mathematical representations of the pathway that electrons take, if we solve these wave equations, we can find the probability of an electron being at a certain region in a certain volume. And these probabilities are given by orbitals. So orbitals represent certain shapes or volumes within which our electrons are most likely in. The reason I say most likely is because orbitals are probabilities. Now, before we talk more about orbitals, let's recall what quantum numbers are.