surface coverage, $$\theta$$

https://doi.org/10.1351/goldbook.S06165
Number of adsorbed molecules on a surface divided by the number of molecules in a filled @M04015@ on that surface.
Sources:
Green Book, 2nd ed., p. 63 [Terms] [Book]
PAC, 1979, 51, 2243. (General aspects of trace analytical methods—IV. Recommendations for nomenclature, standard procedures and reporting of experimental data for surface analysis techniques) on page 2247 [Terms] [Paper]