Results 11 to 20 of about 880,736 (328)
Group Theoretical Description of Periodic System of Elements: II. Seaborg Table
Mathematical structures and modeling, 2019 Group theoretical description of Seaborg table (an eight-periodic extension of the Mendeleev table) is considered in the framework of the Rumer-Fet model. The mass formula, which allows one to provide a termwise mass splitting of the basic representation of the Rumer-Fet group, is introduced.
В.В. Варламов
openalex +2 more sources
On the membership of group 3 of the periodic table: A new approach
THEORIA. An International Journal for Theory, History and Foundations of Science, 2019 In April 2015, an international team of researchers announced the measurement, for the first time, of the first ionization energy of lawrencium, a superheavy element of atomic number 103. The experimental result, published in the prestigious scientific journal Nature, led to the reopening of a long-standing debate that concerns the elements that should
Martín Gabriel Labarca +1 more
openalex +3 more sources
The article considers the periodic table of chemical elements, and that it is a graphic representation of the periodic law, although more than 150 years have passed since the opening of the periodic law, there is no precise formulation of the mathematical formula of this law. The formulas presented in the article are difficult to summarize the periodic
Isatai Nurlybayev +4 more
openalex +4 more sources
Hassium Confirmed as Group VIII Member in Periodic Table [PDF]
MRS Bulletin, 2001 openalex +3 more sources
Provisional Report on Discussions on Group 3 of The Periodic Table
Chemistry International, 2021 Eric R. Scerri
openalex +2 more sources
Emissivity of group V elements periodic table in a wide temperature range
Izvestiâ Akademii nauk SSSR. ÈnergetikaThe results of a study of the normal integral emissivity of the elements of group V of the Periodic system in the solid–liquid temperature range are presented. The choice of research objects – metallic vanadium, antimony and bismuth, is justified by the absence of data on the emissivity of these elements in the open press.
D. V. Kosenkov, V. V. Sagadeev
openalex +3 more sources
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 +1 more source
Indonesian Journal of Educational Research and Technology, 2023 This study investigated the effect of the concept mapping teaching approach on students’ performance in Chemistry in senior secondary schools regarding a periodic table concept.
Torpev Terver Francis +1 more
doaj +1 more source
Comparison of Hartree Factor and Density Function Theory in Calculating Coating Constants and NMR Parameters of Chromate and Molecular Complexes with Alanine and Glycine [PDF]
International Journal of New Chemistry, 2017 Chromium and molybdenum are intermediate elements of a periodic table group, both of which are both low but essential in nutrition because they play a key role in the metabolism of the chemical activity of the body.
Vinod Nguyen
doaj +1 more source
The generalized Lindemann melting coefficient [PDF]
, 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
Hepburn, Ian +2 more
core +3 more sources