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The list given in ISO 31-8:1992 was quoted from the 1998 IUPAC "Green Book" Quantities, Units and Symbols in Physical Chemistry and adds in some cases in parentheses the Latin name for information, where the standard symbol has no relation to the English name of the element. Since the 1992 edition of the standard was published, some elements ...
More generally, iso is a compound which is isomeric to the n compound (a compound in which individual atoms or atomic groups are rearranged) neo is a non-specific term for "new", usually synthetically produced substances or isomers of long-known n compounds or natural substances (for example neomenthol derived from menthol or neoabietic acid ...
The IUCR definition [2] used by crystallographers is: Two crystals are said to be isostructural, if they have the same structure, but not necessarily the same cell dimensions nor the same chemical composition, and with a 'comparable' variability in the atomic coordinates to that of the cell dimensions and chemical composition.
Quantities, Units and Symbols in Physical Chemistry, also known as the Green Book, is a compilation of terms and symbols widely used in the field of physical chemistry. It also includes a table of physical constants , tables listing the properties of elementary particles , chemical elements , and nuclides , and information about conversion ...
Quantities, Units and Symbols in Physical Chemistry – this IUPAC "Green Book" covers many ISO 31 definitions IEC 60027 Letter symbols to be used in electrical technology ISO 1000 SI Units and Recommendations for the use of their multiples and of certain other units (bundled with ISO 31 as the ISO Standards Handbook – Quantities and units )
ISO 80000-8:2020 revised ISO 80000-8:2007, [37] which revised ISO 31-7:1992. [38] It gives names, symbols, definitions, and units for quantities of acoustics. The descriptive text of this part is available online. [39] It has a foreword, scope introduction, scope, normative references (of which there are none), as well as terms, and definitions.
Once a substitution is made on a parent molecule, its structural symmetry is usually reduced, meaning that atoms that were formerly equivalent may no longer be so. Thus substitution of two or more equivalent atoms by the same element may generate more than one positional isomer. The classical example is the derivatives of benzene. Its six ...
ISO 14289-1:2014 Part 1: Use of ISO 32000-1 (PDF/UA-1) ISO/TR 14292:2012 Health informatics – Personal health records – Definition, scope and context; ISO 14296:2016 Intelligent transport systems – Extension of map database specifications for applications of cooperative ITS