(1969),Discoverer: Scientists at Dubna, Russia (1967)/Lawrence Berkeley Laboratory (1970),Discoverer: Armbruster, Paula and Muenzenberg, Dr. Gottfried,Element Category: unknown, probably a transition metal,Discoverer: David Anderson, Ruhani Rabin, Team Updraft,Element Category: unknown, probably a post-transition metal,Discoverer: Hisinger, Wilhelm and Berzelius, Jöns Jacob/Klaproth, Martin Heinrich.Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence.
Tellurium is chemically related to selenium and sulfur. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC.Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. (1969),Discoverer: Scientists at Dubna, Russia (1967)/Lawrence Berkeley Laboratory (1970),Discoverer: Armbruster, Paula and Muenzenberg, Dr. Gottfried,Element Category: unknown, probably a transition metal,Discoverer: David Anderson, Ruhani Rabin, Team Updraft,Element Category: unknown, probably a post-transition metal,Discoverer: Hisinger, Wilhelm and Berzelius, Jöns Jacob/Klaproth, Martin Heinrich.Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. Its extreme rarity in the Earth’s crust, comparable to that of platinum.Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. It is a noble metal and a member of the platinum group.Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). Iodobenzene is an organoiodine compound consisting of a benzene ring substituted with one iodine atom. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.Nickel is a silvery-white lustrous metal with a slight golden tinge. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. It is fairly soft and slowly tarnishes in air. Melting point of Iodine is 113.5°C. The name xenon for this gas comes from the Greek word ξένον [xenon], neuter singular form of ξένος [xenos], meaning ‘foreign(er)’, ‘strange(r)’, or ‘guest’. Pure germanium is a semiconductor with an appearance similar to elemental silicon.Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Neptunium is the first transuranic element.Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized.Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas.Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide.Berkelium is a member of the actinide and transuranium element series.Californium is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye (after einsteinium). By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium.Fluorine is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions.
Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant.Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Thorium is moderately hard, malleable, and has a high melting point. Two-thirds of the iodine in a human body is found in the thyroid. Caesium has physical and chemical properties similar to those of rubidium and potassium.Barium is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Neodymium is not found naturally in metallic form or unmixed with other lanthanides, and it is usually refined for general use. It is the fifth most abundant element in Earth’s crust and the third most abundant metal, after iron and aluminium.Scandium is a silvery-white metallic d-block element, it has historically been sometimes classified as a rare-earth element, together with yttrium and the lanthanides.Vanadium is a hard, silvery grey, ductile, and malleable transition metal. Thorium is a naturally-occurring element and it is estimated to be about three times more abundant than uranium. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.Nickel is a silvery-white lustrous metal with a slight golden tinge. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars.Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. MDL number MFCD00011353. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air.Strontium is an alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly reactive chemically.Yttrium is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a “rare-earth element”.Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite.Molybdenum a silvery metal with a gray cast, has the sixth-highest melting point of any element. In general, melting is a phase change of a substance from the solid to the liquid phase. The metal is found in the Earth’s crust in the pure, free elemental form (“native silver”), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite.Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant.Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
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