Promethium is a highly radioactive element primarily created in the laboratory, though several of it's isotopes can exist in nature (it's longest-lived isotope has a half-life of only 17 years). It is estimated that in nature, no more than 560 grams (a little over a pound) of Promethium exists in the entire crust of the earth.
Hydrogen was discovered first in 1766, while promethium was discovered much later in 1945.
The cost of helium per pound can vary greatly depending on factors such as market demand, availability, and transportation costs. As of 2021, the average price of helium is around $280 per thousand cubic feet, which is equivalent to about $5 per pound.
The cost of sodium per pound can vary widely depending on the purity and form of the element. On average, sodium metal can cost between $20 to $50 per pound, while sodium compounds like sodium chloride (table salt) can be much cheaper. Prices may fluctuate based on market conditions and supplier.
The value of agates can vary greatly depending on factors like size, quality, and color. In general, the price of agates can range from a few dollars per pound for common varieties to hundreds of dollars per pound for rarer and more valuable specimens.
The radioactive metal, Promethium, is a solid at room temperature and standard pressure. It becomes a liquid at 1040ºC and a gas or vapor at 3000ºC.
The price of promethium can vary greatly based on the supplier and market conditions. As of September 2021, promethium prices can range from around $200 to $500 per gram. So, for 100g, the cost could be anywhere from $20,000 to $50,000.
Promethium, a rare earth metal, is not commonly traded on the market. It is typically used in specialized applications in nuclear batteries, scientific research, and some industrial processes. As a result, there is no standard price per kilogram for promethium.
$12 per pound
Per pound of what?
The estimated price of promethium-147 is 0,5 $ per 1 curie.
65$ per pound
tin cost about $50.07 per pound
10 per pound equates to 0.625 per ounce.
£321.33 ($522.24) per pound at today's prices
The price you get per pound of aluminum cans can fluctuate. Currently it is approximately $.30 to $.40 per pound.
1.29 per pound equals 2.84 per kg.
1 pound 12 ounces at $1.96 per pound is: $3.43