| 释义 |
principal quantum number
principal quantum numbern. See first quantum number.
principal quantum number
principal quantum number[′prin·sə·pəl ′kwän·təm ‚nəm·bər] (atomic physics) A quantum number for orbital electrons, which, together with the orbital angular momentum and spin quantum numbers, labels the electron wave function; the energy level and the average distance of an electron from the nucleus depend mainly upon this quantum number. AcronymsSeePQN |