Robuta

https://www.pearson.com/channels/general-chemistry/asset/a4279fc4/group-1-the-alkali-metals-the-periodic-table-properties-of-matter-chemistry-fuse

https://warwick.ac.uk/fac/sci/chemistry/research/scott/scottgroup/scottnet/safety/alkali_metals/

https://www.sintef.no/en/publications/publication/1247915/

https://en.wikibooks.org/wiki/Structural_Biochemistry/Alkali_Metals