ELI5: Explain Like I'm 5

Fock symmetry in theory of hydrogen

Fock symmetry is something that is used to explain the behavior of hydrogen atoms. It helps explain why hydrogen atoms are able to do what they do. Basically, Fock symmetry helps us understand that each hydrogen atom is made up of two particles- a proton and an electron- that behave in a specific way. The proton is positively charged and the electron is negatively charged. The Fock symmetry states that these two particles must be arranged in such a way that the average distance between them is always equal. In other words, no matter how you move the particles around, they will always have the same distance between them. This helps explain why hydrogen atoms always stay in the same shape and do the same things, even when they are moved or changed.