1) Atomic number 40 2) Chemical element 3) Element discovered in 1789 4) Element number 40 5) Element with the symbol Zr 6) Element Zr 7) Metal 8) Metallic element
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1) Zr
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https://www.crosswordclues.com/clue/zirconium
Zr. Element 40, atomic weight 91.22, a hard, grayish, highly flammable crystalline metal that dissolves in hot concentrated acids. Used in steel manufacture and in nuclear reactor chambers because of its transparency to neutrons. Its silicate is used to make zircon used as a gemstone.
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http://antoine.frostburg.edu/chem/senese/101/glossary/z.shtml
Zirconium is a chemical element with the symbol Zr, atomic number 40 and atomic mass of 91.224. The name of zirconium is taken from the name of the mineral zircon, the most important source of zirconium. The word zircon comes from the Persian word zargun زرگون, meaning `gold-colored`. It is a lustrous, grey-white, strong transition metal th.....
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http://en.wikipedia.org/wiki/Zirconium
• (n.) A rare element of the carbon-silicon group, intermediate between the metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4.
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chemical element, metal of Group IVb of the periodic table, used as a structural material for nuclear reactors.[5 related articles]
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http://www.britannica.com/eb/a-z/z/9
(Zr) A silvery-white, metallic element in group IVB of the periodic table; zirconium is a transition element. It was discovered in 1789 by M. H. Klaproth in Berlin; its name comes from the Arabic zargun meaning 'gold color.' Zirconium occurs naturally as baddeleyite (ZrO&...
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(Zr) (zir-ko´ne-әm) a chemical element, atomic number 40, atomic weight 91.22.
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http://www.encyclo.co.uk/local/21001
A mineral, zirconium silicate. A hard mineral with a high index of refraction that is used as a gems
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http://www.encyclo.co.uk/local/22392
Zir·co'ni·um noun [ New Latin ]
(Chemistry) A rare element of the carbon-silicon group, intermediate between the metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4.
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http://www.encyclo.co.uk/webster/Z/4
(Zr) Type: Term Pronunciation: zir-kō′nē-ŭm Definitions: 1. A metallic element, atomic no. 40, atomic wt. 91.224; widely distributed in nature, but never found in quantity in any one place.
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Zirconium is a lustrous, greyish-white, strong, ductile, metallic element, with the symbol Zr. It occurs in nature as the mineral zircon (zirconium silicate), from which it is obtained commercially. It is used in some ceramics, alloys for wire and filaments, steel manufacture, and nuclear reactors, where its low neutron absorption is advantageous.
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http://www.probertencyclopaedia.com/browse/GZ.HTM
[
n] - a lustrous gray strong metallic element resembling titanium
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http://www.webdictionary.co.uk/definition.php?query=zirconium
Silvery-white, metallic element, mp 1860 B0C (3380 B0F), a powerful deoxidizer when added to molten steel.
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Zirconium is a hard, lustrous, silvery coloured metal which is extracted from its ores (the oxide or zircon, ZrSiO
4) by conversion to the tetrahalide followed by reduction with magnesium. The metal is extremely corrosion resistant due to the formation of a stable oxide film and is unaffected by acids (with the exception of HF) and alkali...
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https://www.encyclo.co.uk/local/20687
Zr noun a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon
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https://www.encyclo.co.uk/local/20974
Lustrous, greyish-white, strong, ductile, metallic element, atomic number 40, relative atomic mass 91.22. It occurs in nature as the mineral zircon (zirconium silicate), from which it is obtained commercially. It is used in some ceramics, alloys for wire and filaments, steel manufacture, and nuclear reactors, where its low neutron absorption is...
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https://www.encyclo.co.uk/local/21221
a metallic element found combined in zircon, baddeleyite, etc., resembling titanium chemically: used in steel metallurgy, as a scavenger, as a refractory, and as an opacifier in vitreous enamels. Symbol: Zr; at. wt.: 91.22; at. no.: 40; sp. gr.: 6.49 at 20°C.
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https://www.infoplease.com/dictionary/zirconium
A strong, ductile metal obtained by the chemical processing of zircon-bearing sands. It has good corrosion resistance at high temperatures and is used as a structural material in nuclear reactors and cladding material for uranium.
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