Anton Eduard van Arkel

Anton Eduard van Arkel, (19 November 1893 – 14 March 1976) was a Dutch chemist.

Biography
In the early 1920s Van Arkel together with Jan Hendrik de Boer working for Philips NV, developed a method for the preparation of very pure tungsten: the dissociation of the vapor of tungsten chloride on an incandescent core wire known as the Van Arkel–de Boer process. It is also known as the Crystal bar process. This method was later used by himself and others for many other metals and non-metals. Van Arkel and de Boer thus provided the first method to fabricate pure titanium.

In 1941 he published the Van Arkel–Ketelaar triangle, a diagrammatic method to depict the chemical bonds that would form between elements in the periodic table.

Van Arkel suggested the names "pnictogen" and "pnictide" to refer to chemical elements in group 15 (the nitrogen group or nitrogen family) of the periodic table.

In 1962 Van Arkel became member of the Royal Netherlands Academy of Arts and Sciences.

Van Arkel published at least one textbook, Molecules and Crystals, in 1941 in his native language. In 1949 this work was translated to English.