<noinclude>{{lowercase title}}Infobox model parameter| name = kex| param = </noincludeonlyinclude>k<sub>ex</sub><noinclude/onlyinclude> | desc = The chemical exchange rate constant in .| units = rad.s<sup>-1</sup>.}}
[[Category:Relaxation dispersion analysis]]
[[Category:Relaxation dispersion parameters]]
</noinclude>