Lutetium is the heaviest metal.
"Lutetium is a chemical element in the periodic table that has the symbol Lu and atomic number 71. A metallic element of the rare earth group, lutetium usually occurs in association with yttrium and is sometimes used in metal alloys and as a catalyst in various processes. A strict correlation between periodic table blocks and chemical series for neutral atoms would describe lutetium as a transition metal, but it is commonly considered a lanthanide.
"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 rare earth elements. Lutetium has the highest spin quantum number of the elements, at 7.
"This element is very expensive to obtain in useful quantities and therefore it has very few commercial uses. However, stable lutetium can be used as catalysts in petroleum cracking in refineries and can also be used in alkylation, hydrogenation, and polymerization applications. "
2006-09-08 04:04:09
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answer #1
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answered by aboosait 4
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Osmium is a chemical element in the periodic table that has the symbol Os and atomic number 76. A hard brittle blue-gray or blue-black transition metal in the platinum family, osmium is one of the densest natural elements[1] and is used in some alloys with platinum and iridium. The extraordinary density of osmium is a consequence of the lanthanide contraction. Osmium is found native as an alloy in platinum ore and its tetroxide has been used to stain tissues and in fingerprinting. Alloys of osmium are employed in fountain pen tips, electrical contacts and in other applications where extreme durability and hardness are needed.
Due to its very high density osmium is generally considered to be the heaviest known element, narrowly defeating iridium. However, calculations of density from the space lattice may produce more reliable data for these elements than actual measurements and give a density of 22650 kg/m3 for iridium versus 22610 kg/m3 for osmium. Definitive selection between the two is therefore not possible at this time. If one distinguishes different isotopes, then the heaviest ordinary substance would be 192-Os.
2006-09-08 04:04:41
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answer #2
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answered by GoodGuy 3
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Specific Gravity Of Metals
2016-11-10 09:20:14
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answer #3
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answered by ? 4
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Osmium is one of heaviest metal that exist in nature. Iridium is next to Osmium.
2006-09-11 00:11:55
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answer #4
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answered by Anonymous
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Element #112
Ununbuim (eka-mercury)
Number: 112 , Symbol: Uub , Weight: 277
This Perodic Table is current as of 12/11/2003. As of that time, this appears to be the heaviest element yet created or discovered.
2006-09-08 04:07:20
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answer #5
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answered by Anonymous
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What is the heaviest metal in the world?
Osmium is a hard metallic element which has the greatest density of all known elements. It is twice as heavy as lead, and has a specific gravity of 22.59. (The specific gravity of lead is 11.35; gold is 19.32; and platinum is 21.45.)
Osmium has an atomic weight of 190.2 and its atomic number is 76.
2006-09-08 05:02:23
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answer #6
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answered by Anonymous
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osmium is the heaviest metal having the largest specific gravity.
2006-09-08 05:23:29
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answer #7
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answered by kuru 1
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How heavy an object is, is determined by its density.
The most dense metal on Earth is iridium, which is heavier than gold, iron, tungsten, lead, uranium, or anything else.
2006-09-09 00:32:24
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answer #8
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answered by Barret 3
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The weight of any metal depends on its atomic weight i.e. the weight of its atom.
So, the heaviest metal is the one with the highest atomic weight i.e.
Ununhexium(116) or eka-polonium
2006-09-08 04:18:33
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answer #9
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answered by i_Abhishek 2
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Darmstadium atomic weight=269
2006-09-08 08:30:16
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answer #10
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answered by swatantra k 1
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