Question

What is the maximum number of electrons that an atomic oribital can contain?

Answer 1

Each subshell has a maximum number of electrons which it can hold: s - 2 electrons, p - 6 electrons, d - 10 electrons, and f - 14 electrons.

Answer 2

The orbital shapes start to get weird after that. Each subshell contains a specified number of orbitals, and each orbital can hold two electrons. The types of subshells available to a shell and the number of orbitals in each subshell are mathematically defined by quantum numbers.