ARTICLES AND TABLES

Abbreviations and acronyms of chemical compounds

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Standard abbreviations and acronyms of chemical compounds used by the Journal of Organic Chemistry (JOC) require no definition.

Alphabetical list of chemical elements

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The elements of the periodic table sorted by name, symbol or atomic number. Organization of chemical elements in alphabetical order by their names (or symbols) doesn't tell us anything about their properties but it is useful when searching for an element.

Crystal systems and Bravais lattices

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Crystal system is a method of classifying crystalline substances on the basis of their unit cell. There are seven unique crystal systems: cubic, hexagonal, tetragonal, trigonal, orthorhombic, monoclinic and triclinic.

Electronic configurations of the elements

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The electron configuration describes the distribution of electrons in the shell of an atom at various energy states. This is described by the occupied sub-shells. The shell number is followed by the letter of the sub-shell, with the number of electrons in the shell indicated by a superscript number.

Fundamental physical constants

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CODATA Recommended Values of the Fundamental Physical Constants: 2014.

GHS - Hazard pictograms

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The diamond-shaped pictograms indicate the nature of the hazards associated with the use of a hazardous substance or mixture. Do you know what these pictograms mean?

History of the rare earth elements

ARTICLE: E. GENERALIC

The close chemical similarity of the rare earth elements is displayed in their occurring together in nature and further by the fact that it took nearly 150 years to isolate and identify them.

Naming of elements of atomic numbers greater than 100

ARTICLE: E. GENERALIC

In 1978 IUPAC Commission on the Nomenclature of Inorganic Chemistry decided that it is necessary to have a systematic naming for the elements with atomic number Z > 100, even for those which had not been discovered.

NFPA 704 Hazard Diamond

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NFPA 704: Standard system for the identification of the hazards of materials for emergency response.

Rare earth elements (REE)

ARTICLE: E. GENERALIC

Rare earth elements (REE) are a collection of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides plus scandium and yttrium.

SI - International System of Units

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The base quantities used in the International System of Units are length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity. The corresponding base units of the SI were chosen by the CGPM to be the metre, the kilogram, the second, the ampere, the kelvin, the mole, and the candela.

Solubility product constants

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Solubility product constant (K_sp) (or the solubility product) is the product of the molar concentrations of the constituent ions, each raised to the power of its stoichiometric coefficient in the equilibrium equation.

Climate change

ARTICLE: E. GENERALIC

Some will lie for money (privileges, power) while others will present data that support their 'truth', the third are exclusive and believe only in their own 'truth', the fourth are most likely right but they are lost in all this crowd. Which one of them is actually right, only time will tell.

Global warming and mankind

ARTICLE: E. GENERALIC

Greenhouse gasses are gasses that allow unhindered passage of short wave sunlight (visible part of the spectrum and ultraviolet radiation), and absorb long wave radiation (infrared radiation).

Story of ozone and ozone holes

ARTICLE: E. GENERALIC

The effect of ozone depends on how far away we are from it: it poisons us in the cities (photochemical smog), it heats us in the troposphere (greenhouse gas) and protects us in the stratosphere (ozone layer).

World War 3: Battle for Earth

ARTICLE: E. GENERALIC

I believe you all heard the old saying about how we did not inherit the Earth from our parents but are instead borrowing it from our children. If we want our children to be better follow us battle for Earth.

Character entity references in HTML

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Character entity references for international characters, symbols, mathematical symbols, and Greek letters.

Colors sorted by hex values

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The table of color names and their corresponding RGB values (colors sorted by hex values).

Hexadecimal color codes

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Hexadecimal color codes - quickly find HTML color codes for your website.

HTML color names

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140 color names defined in the HTML and CSS color specification. Colors in HTML are defined by 3 hexadecimal numbers (between 00 and FF) each representing a value of the system palette color RGB (Red, Green, Blue).

Unicode UTF-8 encoding

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Tables with special characters and their corresponding UTF-8 codes that are contained within each supported language's. The Unicode Standard assigns a code point (a number) to each character in every supported script.

Writing mathematical and chemical equations on the Web with CSS

ARTICLE: E. GENERALIC

Writing mathematical and chemical equations (double arrows, oxidation numbers, fractions) on the Web with CSS.