Alfred Werner: Overlooked Genius of the Periodic System.

2019, which was proclaimed by the United Nations as the International Year of the Periodic Table, sees one hundred years since Alfred Werner, the first Swiss to receive a Nobel Prize in chemistry, passed away. The undoubted father of coordination chemistry, he is also well-known for influencing many other fields of chemistry, including organic, inorganic, organometallic, bioinorganic, and stereochemistry. However, one of his more rare and unique contributions to chemistry, his 1905 version of the periodic system, to this day remains overlooked.