This section is referring to wiki page- of zone section-0 that is inherited from the zone section- by prime spin- and span- with the partitions as below.
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The exchange interaction is a quantum mechanical process that only happens between identical particles in chemistry and physics. The energy produced when two or more electrons with the same spin swap locations in a subshell's degenerate orbitals .
On the instinctual level, people may internally stress and externally express the need to protect themselves (self-preservation), to connect with important others or partners (sexual), or to get along or succeed in groups (social).