Viktor Gutmann | Britannica

Viktor Gutmann

Contributor

BIOGRAPHY

Emeritus Professor of Inorganic Chemistry, Technical University of Vienna. Author of Halogen Chemistry and others.

Primary Contributions (1)

A color-coded periodic table of the elements displays each element's symbol and atomic number, with categories such as alkali metals, noble gases, halogens, transition metals, and actinoid elements distinguished by different background colors.

Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). They were given the name halogen, from the Greek roots hal- (“salt”) and -gen…