It is an extremely radioactive synthetic element (an element not found in nature, but can be created in a laboratory). The most stable known isotope, meitnerium-278, has a half-life of 4.5 seconds, although the unconfirmed meitnerium-282 may have a longer half-life of 67 seconds. The ...
Which isotope would you expect to be radioactive? 40 20 C a or 45 20 C aWhat is a transuranium element?How does the number of atoms in a 27.5-gram zinc ring compare to the number in a silver ring of the same mass?In what ...
Which element is formed, according to the theory of the Big bang, before the first generation of galaxies formed? Which one of the following exists as an isotope? a. carbon b. nitrogen c. oxygen d. helium Which of the following elements is radioactive? a. Pl...
Curium-244($185 million/kg) — Curium-244 is used as a power source for radiosotope thermoelectric generators on spacecraft. Plutonium-239($6.49 million/kg) — Plutonium-239 is one of the two fissile (capable of undergoing nuclear fission) materials that are used for nuclear weapons and nuc...