Advances in Engineering Research, volume 177 International Symposium on Engineering and Earth Sciences (ISEES 2018) Quantitative Assessment of the Atom Radii of Chemical Elements Based on Spectral Analysis Data B. L. Aleksandrov E. A. Aleksandrova Department of Physics Department of Chemistry Kuban State Agrarian University Kuban State Agrarian University Krasnodar, Russia Krasnodar, Russia
[email protected] [email protected] L. Sh. Makhmudova Zh. T. Khadisova Chemical Technology of Oil and Gas Department Chemical Technology of Oil and Gas Department M.D. Millionshtchikov Grozny State Oil Technical M.D. Millionshtchikov Grozny State Oil Technical University University Grozny, Russia Grozny, Russia
[email protected] [email protected] Abstract— Atom radii are calculated for chemical elements in different energy states based on photon energy of the emission (absorption) spectrum of atoms. II. DIFFERENT CONCEPTS OF AN ATOMIC RADIUS To define a radius of the atom, a number of concepts are Keywords: atom, radius, emission spectrum, photon applicable depending on the modeling paradigm, classical or I. INTRODUCTION quantum mechanical one: atomic, orbital, effective, covalent, or van der Waals radius. In the N. Bohr model of the atom, The term nanotechnology stands for a set of methods and where electrons travel in defined circular orbits (i.e. energy techniques used to create materials with dimensions in the levels), the radius of the atom is the distance from the center nanometre scale (at atomic and molecular levels) in order to of the nucleus to the furthest electron orbit. An atomic radius produce new products with predetermined properties. Other is a characteristic of an atom that allows for an approximate well-known concepts include molecular nanotechnology estimation of interatomic (inter-nuclear) distances in (MNT) by K.