title: 100th anniversary of Bohr's model of the atom.
abstract: In the fall of 1913 Niels Bohr formulated his atomic models at the age of 27. This Essay traces Bohr's fundamental reasoning regarding atomic structure and spectra, the periodic table of the elements, and chemical bonding. His enduring insights and superseded suppositions are also discussed.
authors.affiliation: Department of Chemistry, University of Siegen, 57068 Siegen (Germany); Tsinghua University Beijing, Beijing 100084 (China). schwarz@chemie.uni-siegen.de.
authors.forename: W H Eugen
authors.initials: WH
authors.lastname: Schwarz
keywords: Bohr, Niels; atomic spectroscopy; model of the atom; periodic system; quantum chemistry