How many meta states does the first isotope to be synthesized in Am in 1944 have?
Isotopes of americium Americium (Am) is an artificial element, and thus a standard atomic weight cannot be given. Like all artificial elements, it has no known stable isotopes. The first isotope to be synthesized was Am in 1944. The artificial element decays into alpha particles. Americium has an atomic number of 95 (the number of protons in the nucleus of the americium atom).
Isotopes of bohrium Bohrium (Bh) is an artificial element, and thus a standard atomic weight cannot be given. Like all artificial elements, it has no stable isotopes. The first isotope to be synthesized was Bh in 1981. There are 11 known isotopes ranging from Bh to Bh, and 1 isomer, Bh. The longest-lived isotope is Bh with a half-life of 1 minute, although the unconfirmed Bh may have an even longer half-life of about 690 seconds.