Iridium
Chemical element Ir symbol, belonging to group 9 of the periodic table, atomic number 77 and atomic mass 192.2. It appears as a silvery white metal, brittle, dense and very hard. Chemically it is very inert and its behavior is similar to that of platinum. It is widely used in alloys for precision material, surgical instruments, high temperature crucibles, etc.
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Chemical Glossary Terms
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A B C D E F G H I J K L M N Ñ O P Q R S T U V W X Y Z
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Chemical Terms begining with I
Glow
Phenomenon by which a substance emits luminous radiation when excited by thermal energy at high temp...
Indicator
Substance that allows the follow-up of a reaction by means of a color change. There are indicators o...
Indian
Chemical element of symbol In, belonging to group 13 of the periodic table, of atomic number 49 and ...
Inert.
Term that applies to chemicals that do not react with almost any other or only do it under extreme c...
Inhibitor
Chemical that slows the speed of a chemical reaction. Inhibitors are important as antiknockers or bi...
Unsaturation
State of a solution in which a quantity of solute has dissolved less than the maximum amount that ca...
Ionic exchange
Process in which an ion of a compound is exchanged for another. In ion exchange resins, a certain io...
Ion
Atom or group of atoms that has gained or lost electrons and presents electric charge. The electrons...
Ion complex.
Complex ion-type compound that is formed by reactions between ions or between ions and molecular com...
Positive ion
Chemical species with positive charge due to the loss of electrons. It is also called cation
Ionization
Variation of the number of electrons in an atom or molecule with formation of positive or negative i...
Iridium
Chemical element Ir symbol, belonging to group 9 of the periodic table, atomic number 77 and atomic ...
Isobar
They are called isobaros (from the Greek: ????, isos = same; ?????, baros = weight) to the different...
IsomerÃa
Phenomenon by which some compounds have the same molecular formula but different structural formula,...
Isomers
Chemical compounds that have the same molecular formula but different molecular structure or differe...
Isotope
Each of the atoms that have the same atomic number but different mass number. This means that the nu...
Ytterbium
Chemical element of symbol Yb, belonging to the series of the lanthanides, of atomic number 70 and a...
Yttrium
Chemical element of symbol Y, pertaining to group 3 of the periodic table, atomic number 39 and atom...
IUPAC.
(International Union of Pure and Applied Chemistry.) Organization responsible for defining policies ...
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