Semiempirical calculation of barriers to pyramidal inversion. Extension to the third row of the periodic table

1974 ◽  
Vol 96 (22) ◽  
pp. 6904-6907 ◽  
Author(s):  
Joseph D. Andose ◽  
Arvi Rauk ◽  
Kurt Mislow
Keyword(s):  
Periodic Table ◽  
Semiempirical Calculation ◽  
The Third ◽  
Pyramidal Inversion

HYPOTHESIS ON THE SYNERGISM OF RADIATION AND WATER FILTERS IN THE FORMATION OF BIOOBJECTS

2019 ◽  
Vol 21 (1) ◽  
pp. 53-58
Author(s):  
B.L. Oksengendler ◽  
S.E. Maksimov ◽  
S.U. Norbaev ◽  
L.Yu. Akopyan ◽  
M.V. Konoplyova ◽  
...  
Keyword(s):  
Periodic Table ◽  
Chemical Elements ◽  
Electron Shell ◽  
Living Matter ◽  
Heavy Atoms ◽  
The Third ◽  
Water Filters ◽  
Selection Of ◽  
Electron Shells

The article contains a hypothesis on the dominance of chemical elements of top periods of the Periodic Table in living matter. The idea is that the elements of the third and next periods of the table, in contrast to the first two periods, have larger number of subvalent electron shells. Because of this, ionization of the k-electron shell by radiation (kosmic and terrestrial) in the heavy atoms always leads to the Auger cascade, which causes the destruction of molecular chains. This mechanism can play a role of the radiation filter in the selection of light chemical elements in living matter in addition to the mechanism of hydrolytic filter (G.R. Ivanitskii).

Semiempirical calculation of barriers to pyramidal inversion for first- and second-row elements

1971 ◽  
Vol 93 (24) ◽  
pp. 6507-6515 ◽  
Author(s):  
Arvi Rauk ◽  
Joseph D. Andose ◽  
Willis G. Frick ◽  
Reginald Tang ◽  
Kurt Mislow
Keyword(s):  
Semiempirical Calculation ◽  
Pyramidal Inversion

scholarly journals The spark spectra of tellurium— Te IV and Te VI

1931 ◽  
Vol 133 (821) ◽  
pp. 220-228 ◽  
Keyword(s):  
Periodic Table ◽  
The Third ◽  
System Characteristic

Of the spectra of the elements of the sixth group of the Periodic Table, our knowledge of the series regularities in the spectra of tellurium appears to be the most meagre. McLennan, McLay and McLeod* have suggested, in part tentatively, a few of the deepest combinations of the arc spectrum, and Gibbs and Vieweg have discovered the triplets and a few of the singlets of the spectrum of quadruply-ionised tellurium. Besides these, so far as the author is aware, there are no published records of the analysis of the various spectra of this element. In a former communication!, the doublet system characteristic of selenium IV has been described. Following this work it was considered that the doublet system of the corresponding spectrum of tellurium of the same chemical group could be easily identified. The present paper gives an analysis, as so far obtained, of the third and fifth spectra of the element.

Adsorption Disciplinarian of Metal Ions on Collagen Fiber Immobilized Bayberry Tannin

2011 ◽  
Vol 391-392 ◽  
pp. 1031-1035 ◽  
Author(s):  
Ru Wang ◽  
Zhen Zhang ◽  
Hui Yun Liu
Keyword(s):  
Metal Ions ◽  
Adsorption Capacity ◽  
Periodic Table ◽  
Collagen Fiber ◽  
Adsorption Behavior ◽  
The Third ◽  
Lanthanide Series ◽  
Adsorption Capacities ◽  
Transition Series ◽  
Actinide Series

Adsorption behavior disciplinarian of the immobilized tannins to metal ions was studied. Experiments showed that adsorption capacities of metal ions lied in ns grouse in the periodic table of elements were relatively low. For the metal ions lied in np grouse in the periodic table of elements, their adsorption capacity increased with the increasing in the radius of metal ions. Adsorption capacities of metal ions having low values in the first transition series in the periodic table of elements, such as Mn(II), Fe(II), Fe(III), Co(II) and Ni(II), were more lower than that of the metal ions having high values, such as Cr(VI), Mn(VII) and V(V). For the metal ions in the second, the third transition series and the actinide series, adsorption capacities were relatively higher than that of metal ions in lanthanide series.

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