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70 Number: Encyclopedia - 70 Number
70 (seventy) is the natural number following 69 and preceding 71.
<< 70 71 72 73 74 75 76 77 78 79 >>
List of numbers -- Inte...
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Yttrium: Encyclopedia - Yttrium
Yttrium is a chemical element in the periodic table that has the symbol Y and atomic number 39. A silvery metallic transition metal, yttr...
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Aluminium Chloride: Encyclopedia - Aluminium Chloride
Aluminium chloride (AlCl3) is a compound of aluminium and chlorine. The anhydrous material has a very interesting structure: despite bein...
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The Elements Song: Encyclopedia Ii - The Elements Song - Lyrics
There's antimony, arsenic, aluminum, selenium,
And hydrogen and oxygen and nitrogen and rhenium,
And nickel, neodymium, neptunium, german...
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Lutetium: Encyclopedia Ii - Lutetium - Notable Characteristics And Applications
Lutetium is a silvery white corrosion-resistant trivalent metal that is relatively stable in air and is the heaviest and hardest of the r...
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Thulium: Encyclopedia Ii - Thulium - Isotopes
Naturally occurring thulium is composed of 1 stable isotope, Tm-169 (100% natural abundance). 31 radioisotopes have been characterized, w...
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Xenotime: Encyclopedia Ii - Xenotime - Occurrence
Occurring as a minor accessory mineral, xenotime is found in pegmatites and other igneous rocks, as well as gneisses rich in mica and qua...
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Aluminium Chloride: Encyclopedia Ii - Aluminium Chloride - Uses
The Friedel-Crafts reaction[3] is the major use for aluminium chloride, for example in the preparation of anthraquinone (for the dyestuff...
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Yttrium: Encyclopedia Ii - Yttrium - Applications
Yttrium(III) oxide is the most important yttrium compound and is widely used to make YVO4 europium and Y2O3 europium phosphors that give ...
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Lutetium: Encyclopedia Ii - Lutetium - Occurrence
Found with almost all other rare-earth metals but never by itself, lutetium is very difficult to separate from other elements and is the ...
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Lutetium: Encyclopedia Ii - Lutetium - Isotopes
Naturally occurring lutetium is composed of 1 stable isotope Lu-175 (97.41% natural abundance). 33 radioisotopes have been characterized,...
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Yttrium: Encyclopedia Ii - Yttrium - Isotopes
Natural yttrium is composed of only one isotope (Y-89). The most stable radioisotopes are Y-88 which has a half life of 106.65 days and Y...
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Aluminium Chloride: Encyclopedia Ii - Aluminium Chloride - Chemical Properties
Aluminium chloride is a powerful Lewis acid, capable of forming stable Lewis acid-base adducts with even weak Lewis bases such as benzoph...
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Yttrium: Encyclopedia Ii - Yttrium - History
Yttrium (named for Ytterby, a Swedish village near Vaxholm) was discovered by Johan Gadolin in 1794 and isolated by Friedrich Wohler in 1...
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Yttrium: Encyclopedia Ii - Yttrium - Occurrence
This element is found in almost all rare earth minerals and in uranium ores but is never found in nature as a free element. Yttrium is co...
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Lutetium: Encyclopedia Ii - Lutetium - History
Lutetium (Latin Lutetia meaning Paris) was independently discovered in 1907 by French scientist Georges Urbain and Austrian mineralogist ...
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