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Lower ranks of coal can be less expensive, for example sub-bituminous coal can cost around US$0.038/kg carbon. [19] Graphite flakes can cost around US$0.9/kg carbon. [ 20 ] Price of synthetic industrial diamond for grinding and polishing can range from 1200 to 13 300 USD/kg, while cost per weight of large synthetic diamonds for industrial ...
Francium-223 is the most stable isotope, with a half-life of 21.8 minutes, [8] and it is highly unlikely that an isotope of francium with a longer half-life will ever be discovered or synthesized. [22] Francium-223 is a fifth product of the uranium-235 decay series as a daughter isotope of actinium-227; thorium-227 is the more common daughter. [23]
It was first synthesized in 1950 at Lawrence Berkeley National Laboratory (then the University of California Radiation Laboratory) by bombarding curium with alpha particles (helium-4 ions). It is an actinide element, the sixth transuranium element to be synthesized , and has the second-highest atomic mass of all elements that have been produced ...
Transuranic elements are difficult and expensive to produce, and their prices increase rapidly with atomic number. As of 2008, the cost of weapons-grade plutonium was around $4,000/gram, [2] and californium exceeded $60,000,000/gram. [3] Einsteinium is the heaviest element that has been produced in macroscopic quantities. [4]
The average price for a dozen large eggs in California hovered around $6.72 as of this week, according to data from the U.S. Department of Agriculture. The cause?
But Borenstein has another theory for why the price of gas is so much higher in California. “California has way fewer off-brand stations like the Costcos and Safeways, but also the Rotten Robbie ...
As of Friday, California has clocked the highest prices at the pump, while Texas has seen some of the lowest. Californians are paying about $2 more for a gallon of gas than… Why gas is so much ...
If anyone finds a reference specifically discussing the issue of the electronegativity of francium, please add it!. --Itub 08:47, 12 April 2007 (UTC) Alright, quick update regarding previous concerns: There is so little reliable information about francium compounds that it doesn't make sense to make a compound section.