Berkelium ( / b ər ˈ k iː l i ə m / bər-KEE-lee-əm, less commonly / ˈ b ɜr k l i ə m / BURK-lee-əm), is a transuranic radioactive chemical element with the symbol Bk and atomic number 97, a member of the actinide and transuranium element series. Element Category: Post-transition metals. In related terms, another unit of mass often used is Dalton (Da) or unified atomic mass unit (u) when describing atomic masses and molecular masses. Applications. Platinum, at a cost of about $27 per gram, may be the most ubiquitous given its very high melting point, resistance to corrosion, electrical conductivity, and durability. 242 Cm generates about three watts of thermal energy per gram, more than plutonium produces. While diamonds vary widely in price, a flawless diamond would run you upwards of $65,000 per gram. The first visible amounts of a berkelium compound, berkelium chloride (BkCl 3 ) was produced in 1962 and weighed about 3 billionths of a gram (0.000000003 grams). Americium-241 (241 Am, Am-241) is an isotope of americium.Like all isotopes of americium, it is radioactive, with a half-life of 432.2 years. gram per metric ton (g/t) 0.0291667 ounce per short ton (2,000 lb) (oz/T) Pressure megapascal (MPa) 10 bar gigapascal (GPa) 10,000 bar Density gram per cubic centimeter (g/cm 3) 62.4220 pound per cubic foot (lb/ft ) milligram per cubic meter (mg/m3) 0.00000006243 pound per cubic foot (lb/ft3) Energy joule (J) 0.0000002 kilowatthour (kWh) c) You need special clearances for things like plutonium. Tin. For this listing the elements are shown alphabetically. Cost per gram- the cost of 252Cf is $10 per milligram My sources: www.chemicalelements.com ., www.jlab.com , www.salem.k12.va.us posted by … Because of the momentous price of the element, we have no use for it. Berkelium; 97 Bk. It decays into americium -243 through alpha decay . For other uses, see Iron (disambiguation). The berkelium was bombarded with over 7 trillion calcium-48 ions per second, accelerated to about 10% of the speed of light. (It is radioactive, has 99 protons, has 153 neutrons, has 99 electrons, isn t found naturally, costs 27 million a gram). Thulium has a few applications: Laser. This element of the actinide series was named after Marie and Pierre Curie, both known for their research on radioactivity.Curium was first intentionally produced and identified in July 1944 by the group of Glenn T. Seaborg at the University of California, Berkeley. Ac-227 – … 50. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. The cost of curium and americium, which have commercial use in smoke detectors, is similar to plutonium, even a little higher: Curium is priced at several hundreds of dollars per gram, while americium is about 1,500 $ per gram. In 2007, rhodium cost approximately eight times more than gold, 450 times more than silver, and 27,250 times more than copper by weight. 7.31 g/cm3. This article is about the metallic element. The articles in this Schools selection have been arranged by curriculum topic thanks to SOS Children volunteers. It is said to be found in, or used to produce, 20% of all consumer goods. When a price vs a bulk price was given, I used the non-bulk price. Polonium is likely to be the most expensive metal, at a notional cost of about $100,000,000 per gram, In 1996, thulium oxide cost US$20 per gram, and in 2005, 99%-pure thulium metal powder cost US$70 per gram. In 2008, the price briefly rose above $10,000 per ounce ($350,000 per kilogram). Subscribe. Californium is another radioactive element, used primarily in research and in instruments employed in the petroleum industry. Thanks! The intergrowth of californium in berkelium occurs at a rate of 0.22% per day and is an intrinsic obstacle in studying berkelium properties. 7.31 g/cm3. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. The first thing to understand is that no-one buys californium by the gram. Still, the isotope only lasts 320 days and is incredibly expensive to create, starting at $185 per microgram. Gauge is about 6-10 sts per inch on a US 0-3 size needle. Insane, I know. Curium is a transuranic radioactive chemical element with the symbol Cm and atomic number 96. Tin. The specific activities are written in scientific notation (i.e., 7.2E1 is equal to 7.2 x 10, or 72). SOS Child sponsorship is cool! Both 242 Cm and 244 Cm have been used as power sources for space and medical practices. The data showed five nuclei of interest were produced during the 70 day bombardment. But since smoke detectors need less than a millionth of a gram of americium, this is actually quite affordable. To put that into context, there are one million micrograms in a gram, so it’s about 185 million dollars for just one gram of the cheapest form of Berkelium. ... at a high price of the order 185 USD per microgram. This cuts a whole $0.002 off the total cost. [3] Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. It cannot just have something to do with the name itself, it must have something to with the actual element. d) A few micrograms of polonium are incredibly deadly, a whole 1 g would be insane, so the price shouldn’t be a surprise. A gram of californium … Concentrations of suspended particulates in water are given in micrograms per gram (µg/g), milligrams per kilogram (mg/kg), or femtograms per gram (fg/g). Elements and Periodic Table History. Live Nickel price in USD: On this site you get the real-time price of Nickel in US-Dollar. Americium, 95 Am Americium; Pronunciation / ˌ æ m ɪ ˈ r ɪ s i ə m / (AM-ə-RISS-ee-əm) Appearance: silvery white: Mass number [243] Americium in the periodic table Markets Insider . Background Information. Gauge is about 6-8 sts per inch on a US 0-3 size needle; Force is a 70% superwash BFL/20% Silk/10% Cashmere , and has approximately 438 yds per 100 gram hank. Actinium. As a consequence of the high energy of the impacts that created them, these nuclei instantly lost thermal energy by emitting four neutrons to form tennessine-293. It is made in nuclear reactors by the neutron bombardment of plutonium-239. Berkelium's most stable isotope, berkelium-247, has a half-life of about 1,380 years. Help text not available for this section currently History. Less than a gram of berkelium is made each year. This cuts a whole $0.002 off the total cost. Molecular mass or molar mass are used in stoichiometry calculations in chemistry. While copper costs $2.10 per pound at the moment, a pre-1982 American cent is readily available and contains 3.1 g of it. It costs around $30,000 per gram. Related subjects: Chemical elements. Carbon can be one of the least expensive elements (as carbon black or soot) or most expensive (as diamond). Inertia is a 2-ply, 80% superwash merino 20% nylon base with approximately 400 yards per 100 gram hank. Chemically, indium is similar to gallium and thallium. Just over one gram of berkelium has been produced in the United States since 1967. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure.The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Berkelium was first produced in December 1949, at the University of California at Berkeley, and was made by Stanley Thompson, Albert Ghiorso, and Glenn Seaborg. The following is a listing of specific activities, in units of “curies per gram” for a variety of radionuclides. Holmium-chromium-thulium triple-doped Yttrium aluminum garnet (Ho:Cr:Tm:YAG, or Ho,Cr,Tm:YAG) is an active laser medium material with high efficiency. Discoverer: unknown. Berkelium. They buy it by the microgram. Abundance: few parts per trillion (0.1 part per trillion) in Earth’s crust; able to produce 125 grams at one time Atomic Number: 91 Atomic Weight: 231.03588(1) Element Category: Actinide Common Uses: No practical uses outside of scientific research parts per million (ppm), parts per billion (ppb), or parts per trillion (ppt). Word Origin: Lawrencium is named for Ernest O. Lawrence, inventor of the cyclotron, which was instrumental in the discovery of many elements. Insider. Sn. Thus, 249 Bk is the most accessible isotope of berkelium, which still is available only in small quantities (only 0.66 grams have been produced in the US over the period 1967–1983 [39]) at a high price of the order 185 USD per microgram. The americium oxide used in smoke detectors costs around $1500 per gram - compare this with the current gold price of around $30 per gram. Thus, 249 Bk is the most accessible isotope of berkelium, which still, is available only in small quantities (only 0.66 grams have been produced in the US over the period 1967–1983) at a high price of the order 185 USD per microgram. It is defined to be 1/12 of the mass of one atom of carbon-12 and in older works is also abbreviated as "amu". So it isn't really $27 million dollars per gram, it is $27 per microgram. There's a nice irony that the element named after the world's richest, most consumption-oriented nation is only typically used in very small quantities.
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