Singlet state - Wikipedia
https://en.wikipedia.org/wiki/Singlet_stateIn quantum mechanics, a singlet state usually refers to a system in which all electrons are paired. The term 'singlet' originally meant a linked set of particles whose net angular momentum is zero, that is, whose overall spin quantum number . As a result, there is only one spectral line of a singlet
Singlet state - Wikipedia
en.wikipedia.org › wiki › Singlet_stateIn quantum mechanics, a singlet state usually refers to a system in which all electrons are paired. The term 'singlet' originally meant a linked set of particles whose net angular momentum is zero, that is, whose overall spin quantum number s = 0 {\displaystyle s=0}. As a result, there is only one spectral line of a singlet state. In contrast, a doublet state contains one unpaired electron and shows splitting of spectral lines into a doublet; and a triplet state has two unpaired electrons and sh
Singlet oxygen - Wikipedia
https://en.wikipedia.org/wiki/Singlet_oxygenSinglet oxygen refers to one of two singlet electronic excited states. The two singlet states are denoted Σ g and Δg (the preceding superscript "1" indicates a singlet state). The singlet states of oxygen are 158 and 95 kilojoules per molehigher in energy than the triplet ground state of oxygen. Under most common laboratory conditions, the higher energy Σ g singlet state rapidly converts to th…