scholarly journals Model Equation Based on the 8 Groups and the 7 Periods in the Periodic Table of Elements

2021 ◽  
Vol 9 (2) ◽  
pp. 14
Author(s):  
Orwa Houshia ◽  
Harbi Daraghmeh ◽  
Naba Abuhafez ◽  
Ahmad Abdelraouf Jrar
Keyword(s):  
Periodic Table ◽  
Model Equation ◽  
Nuclear Charge ◽  
Chemical Properties ◽  
Far Right ◽  
Atomic Size ◽  
Naturally Occurring ◽  
Or Groups ◽  
Physical And Chemical ◽  
And Chemical Properties

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 nonmetals on the far right side of the table. Further, the elements are also arranged in eight vertical columns or groups for those with similar physical and chemical properties. A model equation has been developed based on the 8-group and the 7-periods from which trends of elements has been calculated. Among the trends in the periodic table that were calculated are ionization energy, atomic size and effective nuclear charge. It has been discovered that the calculated theoretical values from the model equation rhyme well with the actual values for each element with few exceptions.

Elements of Heroism

2019 ◽  
Vol 41 (4) ◽  
pp. 34-37
Author(s):  
Suze Kundu
Keyword(s):  
Science Fiction ◽  
Periodic Table ◽  
Relative Size ◽  
Comic Book ◽  
Chemical Properties ◽  
Relative Reactivity ◽  
Physical And Chemical Properties ◽  
Fiction Writers ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract In today’s periodic table, 118 elements stand side by side, neatly arranged in rows and columns, mapping out their relative size, proudly sharing their family’s traits, and showcasing their relative reactivity and predicted behaviour in different situations. Back in 1869 when Dmitri Mendeleev devised the arrangement of elements we use to this day, there were notable gaps left for elements that had not yet been discovered. As the arrangement of the elements was based on a range of physical and chemical properties, it was easy to predict some of the properties of the missing elements. It was in these gaps that both scientists and artists alike dared to dream about elemental discoveries with both predicted and unpredicted properties. Comic book and science fiction writers in particular had fun postulating some of the possible elements that would give their superheroes the characteristics they required to carry out their tasks. They created fictional elements in place of some of the as yet undiscovered elements, many of which now share properties with elements that exist today.

Relativity in the electronic structure of the heaviest elements and its influence on periodicities in properties

2019 ◽  
Vol 107 (9-11) ◽  
pp. 833-863 ◽  
Author(s):  
Valeria Pershina
Keyword(s):  
Periodic Table ◽  
Chemical Properties ◽  
Relativistic Effects ◽  
Experimental Investigations ◽  
Close Link ◽  
Chemical Studies ◽  
Heaviest Elements ◽  
Chemical Groups ◽  
Physical And Chemical ◽  
And Chemical Properties

AbstractTheoretical chemical studies demonstrated crucial importance of relativistic effects in the physics and chemistry of superheavy elements (SHEs). Performed, with many of them, in a close link to the experimental research, those investigations have shown that relativistic effects determine periodicities in physical and chemical properties of the elements in the chemical groups and rows of the Periodic Table beyond the 6thone. They could, however, also lead to some deviations from the established trends, so that the predictive power of the Periodic Table in this area may be lost. Results of those studies are overviewed here, with comparison to the recent experimental investigations.

Crystalline Ceramics Developed for the Immobilization of Actinide Wastes in Russia

2001 ◽  
Author(s):  
Boris E. Burakov ◽  
Evgeniy B. Anderson
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Cubic Zirconia ◽  
Mixed Oxide Fuel ◽  
Waste Forms ◽  
Naturally Occurring ◽  
Physical And Chemical ◽  
Geological Formations ◽  
Ceramic Nuclear Fuel ◽  
And Chemical Properties

Abstract It is proposed that only ceramics, which are based on host-phases similar to naturally occurring accessory minerals including zircon, (Zr,Hf,An,…)SiO4; hafnon, (Hf,Zr,An,…)SiO4; baddeleyite, (Zr,Hf,An,…)O2; tazheranite (cubic zirconia), (Zr,Hf,Ca,Ti,An,…)O2; garnet, (Ca,Fe,Gd,An,…)3(Al,Fe,Si,An,…)5O12 and perovskite, (Ca,Gd,An,…)(Al,Fe,Ti,…)O3, are the most suitable materials for actinide (An = U, Pu, Np, Am, Cm) isolation in deep geological formations. Solid solution of Pu in cubic zirconia, (Zr,Pu)O2, could be used as ceramic nuclear fuel which is competitive with mixed oxide fuel, (U,Pu)O2. Samples of these ceramics doped with Pu from a few % to 37 wt. % El. were successfully synthesized and investigated. Physical and chemical properties of synthesized ceramics, and the industrial scale applications of these suggested waste forms, are discussed.

scholarly journals Relationship of thermodynamic data with Periodic Law

2019 ◽  
Vol 91 (6) ◽  
pp. 879-893
Author(s):  
Valery P. Vassiliev ◽  
Valery A. Lysenko ◽  
Marcelle Gaune-Escard
Keyword(s):  
Solid State ◽  
Periodic Table ◽  
Chemical Properties ◽  
Standard Entropy ◽  
Physical And Chemical Properties ◽  
Tetrad Effect ◽  
Binary Compounds ◽  
Relationship Of ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract Relationships between the various physical and chemical properties of isostructural compounds take place according to the Periodic Table that is a fundamental basis of Chemistry. The systematization of this approach, data vs. the Periodic Table, will contribute to further development of the solid state chemistry theory. The lanthanides and the actinides make up the f block of the Periodic Table. The lanthanides are the elements produced as the 4f sublevel is filled with electrons and the actinides are formed while filling the 5f sublevel. In this paper, we analyze some classes of compounds formed by the lanthanides with other elements of the Periodic Table, which can count into the thousands of binary compounds. The special place of lanthanides in the Periodic System of Elements made it possible to establish strict nonlinear relationships between the standard entropy and the lanthanide atomic number of the compounds Ln2X3 (X = O, S, Se, Te), LnN, LnB4, and LnF3 in the solid state. This relationship, based on tetrad-effect, can be applied to other physical and chemical properties of the isostructural compounds. The thermodynamic properties of actinides have been studied much less than lanthanides, but the similarity of physicochemical properties makes it possible for us to estimate, with sufficient accuracy, unexplored properties using fundamental laws. One of these laws is the tetrad-effect concept that is an effective tool to predict missing thermodynamic values for lanthanide and actinide compounds and to rationally plan experiments.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Tailoring microstructures of materials through biomimetics

1993 ◽  
Vol 51 ◽  
pp. 500-501
Author(s):  
Mehmet Sarikaya ◽  
Ilhan A. Aksay
Keyword(s):  
Chemical Properties ◽  
Design And Synthesis ◽  
Structure Sensitive ◽  
Macro Scale ◽  
Methods Of Synthesis ◽  
Successive Level ◽  
Engineering Materials ◽  
Physical And Chemical ◽  
And Chemical Properties ◽  
Synthesis Of Materials

Biomimetics involves investigation of structure, function, and methods of synthesis of biological composite materials. The goal is to apply this information to the design and synthesis of materials for engineering applications.Properties of engineering materials are structure sensitive through the whole spectrum of dimensions from nanometer to macro scale. The goal in designing and processing of technological materials, therefore, is to control microstructural evolution at each of these dimensions so as to achieve predictable physical and chemical properties. Control at each successive level of dimension, however, is a major challenge as is the retention of integrity between successive levels. Engineering materials are rarely fabricated to achieve more than a few of the desired properties and the synthesis techniques usually involve high temperature or low pressure conditions that are energy inefficient and environmentally damaging.In contrast to human-made materials, organisms synthesize composites whose intricate structures are more controlled at each scale and hierarchical order.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

Sign in / Sign up

Export Citation Format

Share Document