Results 11 to 20 of about 1,505,110 (342)
On a group-theoretical approach to the periodic table of chemical elements [PDF]
arXiv, 2004 To be published in the Proceedings of the XI International Conference on Symmetry Methods in Physics (SYMPHYS-11) organized by the Bogoliubov Laboratory of Theoretical Physics of the Joint Institute for Nuclear Research in Dubna and the Doppler Institute of the Czech Technical University in Prague (Prague, Czech Republic, 21-24 June 2004)
Maurice Kibler
arxiv +6 more sources
A Group-Theoretical Approach to the Periodic Table of Chemical Elements: Old and New Developments [PDF]
, 2003 This paper is a companion article to the review paper by the present author devoted to the classification of matter constituents (chemical elements and particles) and published in the first part of the proceedings of The Second Harry Wiener International Memorial Conference (see quant-ph/0310155).
M. Kibler
core +7 more sources
The generalized Lindemann melting coefficient [PDF]
Solid State Communications, vol. 318, 113977 (2020), 2020 Lindemann developed the melting temperature theory over 100 years ago, known as the Lindemann criterion. Its main assumption is that melting occurs when the root-mean-square vibration amplitude of ions and atoms in crystals exceeds a critical fraction, h of the inter-atomic spacing in crystals.
Hepburn, Ian +2 more
arxiv +8 more sources
Evaluation of the periodic table as a teaching tool and content for conceptual change in chemical processes [PDF]
Journal of Science and Education, 2023 This study focused on two crucial chemistry concepts, chemical bonding and related reactions. It explored how learners may conceptually use the periodic table in their scientific understanding.
Thabo Mhlongo, Thomas Dipogiso Sedumedi
doaj +3 more sources
From the Mendeleev periodic table to particle physics and back to the periodic table [PDF]
Foundations of Chemistry 9 (2007) 221-234, 2006 We briefly describe in this paper the passage from Mendeleev's chemistry (1869) to atomic physics (in the 1900's), nuclear physics (in the 1932's) and particle physics (from 1953 to 2006). We show how the consideration of symmetries, largely used in physics since the end of the 1920's, gave rise to a new format of the periodic table in the 1970's. More
A.O. Barut +19 more
arxiv +8 more sources
The Periodic Table and Kinetics?
CHIMIA, 2019 Mendeleev in his first publication ordered the chemical elements following an apparent periodicity of properties such as atomic volume and valence. The reactivity of the elements was only studied systematically many years later.
Lothar Helm, André E. Merbach
doaj +2 more sources
Model Equation Based on the 8 Groups and the 7 Periods in the Periodic Table of Elements
International Research in Education, 2021 The periodic table of chemistry contains all synthetic and naturally occurring elements. The elements are arranged in seven horizontal periods from left to right with increasing atomic number. The periodic table is divided into two groups: metals and nonmetals, within elements moving from left to right, the elements get less metallic, culminating in ...
Orwa Houshia +3 more
openaire +4 more sources
ON THE FORMATION AND STABILITY OF BICARBONATES OF THE METALS OF THE GROUP II OF THE MENDELEEF'S PERIODIC TABLE [PDF]
, 1948 The acid carbonates of Be, Mg, Zn, Cd and Hg have been isolated for the first time in the solid state, and have also been stabilized. The stability of the bicarbonate of Zn, Cd and Hg (II B group) decreases with decreasing electro-positive character of these metals.
K. C. GROVER
openaire +3 more sources
Tight-binding bond parameters for dimers across the periodic table from density-functional theory [PDF]
Phys. Rev. Materials 5, 023801 (2021), 2019 We obtain parameters for non-orthogonal and orthogonal TB models from two-atomic molecules for all combinations of elements of period 1 to 6 and group 3 to 18 of the periodic table.
Jan Jenke +4 more
semanticscholar +2 more sources