Editing CNO cycle (section)

=== CNO-II ===
In a minor branch of the above reaction, occurring in the Sun's core 0.04% of the time, the final reaction involving {{nuclide|nitrogen|15|link=yes}} shown above does not produce carbon-12 and an alpha particle, but instead produces oxygen-16 and a photon and continues
:{{Separated entries
|{{nuclide|nitrogen|15|link=yes}}|{{nuclide|oxygen|16|link=yes}}|{{nuclide|fluorine|17|link=yes}}|{{nuclide|oxygen|17|link=yes}}|{{nuclide|nitrogen|14|link=yes}}|{{nuclide|oxygen|15|link=yes}}|{{nuclide|nitrogen|15}}|separator=&nbsp;→&nbsp;}}

In detail:

<!-- Autogenerated using Phykiformulae 0.12 [[User:SkyLined#Phykiformulae]]
 N-15 + H -> O-16 + y  _ _  + 12.13 MeV
 O-16 + H -> F-17 + γ  _ _  + 0.60 MeV
 F-17 _ _ -> O-17 + e+ + νe + 2.76 MeV
 O-17 + H -> N-14 + He _ _  + 1.19 MeV
 N-14 + H -> O-15 + y  _ _  + 7.35 MeV
 O-15 _ _ -> N-15 + e+ + ve + 2.75 MeV

-->:{| border="0"
|- style="height:2em;"
|{{nuclide|nitrogen|15}}&nbsp;||+&nbsp;||{{nuclide|hydrogen|1}}&nbsp;||→&nbsp;||{{nuclide|oxygen|16}}&nbsp;||+&nbsp;||{{math|{{SubatomicParticle|Gamma}}}}&nbsp;||&nbsp;||&nbsp;||+&nbsp;||{{val|12.13|u=MeV}}
|- style="height:2em;"
|{{nuclide|oxygen|16}}&nbsp;||+&nbsp;||{{nuclide|hydrogen|1}}&nbsp;||→&nbsp;||{{nuclide|fluorine|17}}&nbsp;||+&nbsp;||{{math|{{SubatomicParticle|Gamma}}}}&nbsp;||&nbsp;||&nbsp;||+&nbsp;||{{val|0.60|u=MeV}}
|- style="height:2em;"
|{{nuclide|fluorine|17}}&nbsp;||&nbsp;||&nbsp;||→&nbsp;||{{nuclide|oxygen|17}}&nbsp;||+&nbsp;||{{SubatomicParticle|Positron}}&nbsp;||+&nbsp;||{{math|{{SubatomicParticle|Electron Neutrino}}}}&nbsp;||+&nbsp;||{{val|2.76|u=MeV}}||(half-life of 64.49 seconds)
|- style="height:2em;"
|{{nuclide|oxygen|17}}&nbsp;||+&nbsp;||{{nuclide|hydrogen|1}}&nbsp;||→&nbsp;||{{nuclide|nitrogen|14}}&nbsp;||+&nbsp;||{{nuclide|helium|4}}&nbsp;||&nbsp;||&nbsp;||+&nbsp;||{{val|1.19|u=MeV}}
|- style="height:2em;"
|{{nuclide|nitrogen|14}}&nbsp;||+&nbsp;||{{nuclide|hydrogen|1}}&nbsp;||→&nbsp;||{{nuclide|oxygen|15}}&nbsp;||+&nbsp;||{{SubatomicParticle|Gamma}}&nbsp;||&nbsp;||&nbsp;||+&nbsp;||{{val|7.35|u=MeV}}
|- style="height:2em;"
|{{nuclide|oxygen|15}}&nbsp;||&nbsp;||&nbsp;||→&nbsp;||{{nuclide|nitrogen|15}}&nbsp;||+&nbsp;||{{SubatomicParticle|Positron}}&nbsp;||+&nbsp;||{{math|{{SubatomicParticle|Electron Neutrino}}}}&nbsp;||+&nbsp;||{{val|2.75|u=MeV}}||(half-life of 122.24 seconds)
|}

Like the carbon, nitrogen, and oxygen involved in the main branch, the [[fluorine]] produced in the minor branch is merely an intermediate product; at steady state, it does not accumulate in the star.