Atomic orbitals have parity (−1), where the exponent ℓ is the azimuthal quantum number. The parity is odd for orbitals p, f,... with ℓ = 1, 3,..., and an atomic state has odd parity if an odd number of electrons occupy these orbitals. For example, the ground state of the nitrogen atom has the electron configuration 1s 2s 2p, and is identified by the term symbol S, where the superscript o denotes odd parity. However the third excited term at about 83,300 cm above the ground state has electron configuration 1s 2s 2p 3s has even parity since there are only two 2p electrons, and its term symbol is P (without an o superscript).