نتایج جستجو برای: periodic table

تعداد نتایج: 198946  

2007
P. Ošmera

This paper is an attempt to attain a new and profound model of the nature’s structure using a vortex-fractal theory (VFT). Scientists try to explain some phenomena in Nature that have not been explained so far. The aim of this paper is the vortex-fractal modeling of vortex-ring fractal structure of atoms, molecules, and a creation of elements in the Mendeleev’s periodic table with vortex-ring p...

2007
David E. Lewis

It is scant exaggeration to say that modern organic synthesis would be almost inconceivable without the important carbon-carbon bond-forming reactions involving the addition or organometallic reagents to aldehydes, ketones and acid derivatives. Today, the addition reactions of organometallic reagents of most elements of the periodic table have been explored in great detail, permitting the synth...

2017
J.-P. Desclaux B. Fricke

2014 In contradiction to the prediction of the Periodic Table but in agreement with earlier suggestions by Brewer and Mann, the ground state configuration of atomic Lawrencium (Z = 103) will not be 7s2 6d 2D3/2 but 7s2 7p 2P1/2. The reason for this deviation from normal trends across the Periodic Table are strong relativistic effects on the outermost 7p1/2 orbital. Multiconfiguration Dirac-Fock...

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