The number of neutrons N = A - Z = 23 - 11 = 12 neutrons. There are no electrons in the nucleus of a sodium atom. There are 11 protons, 12 neutrons and 0 electrons inside a sodium nucleus.

The SABRE South experiment is designed to search for dark matter from the Southern Hemisphere. Its main goal is to provide ...

Spectroscopic data on alkali-atom dimers residing on the surface of liquid helium nanodroplets have revealed that they are detected primarily in the weakly bound, metastable, spin-triplet state. Here, ...

Recently developed experimental methods, including light forces, position-sensitive time-of-flight deflection, and atom interferometry, are also extensively discussed. Theoretical techniques for ...

Fukui Institute for Fundamental Chemistry, Kyoto University, Takano, Nishihiraki-cho 34-4, Sakyo-ku, Kyoto 606-8103, Japan ...