electron-capture transition
81Isotopes of manganese — Naturally occurring manganese (Mn) is composed of 1 stable isotope; 55Mn. 25 radioisotopes have been characterized with the most stable being 53Mn with a half life of 3.7 million years, 54Mn with a half life of 312.3 days, and 52Mn with a half… …
82Isotopes of chromium — Naturally occurring chromium (Cr) is composed of four stable isotopes; 50Cr, 52Cr, 53Cr, and 54Cr with 52Cr being the most abundant (83.789% natural abundance). 50Cr is suspected of decaying by β+β+ to 50Ti with a half life of (more than)… …
83Ruthenium — (pronEng|ruːˈθiːniəm) is a chemical element that has the symbol Ru and atomic number 44. A rare transition metal of the platinum group of the periodic table, ruthenium is found associated with platinum ores and used as a catalyst in some platinum …
84Star — For other uses, see Star (disambiguation) …
85Tantalum — (pronEng|ˈtæntələm) (formerly tantalium IPA|/tænˈtæliəm/) is a chemical element with the symbol Ta and atomic number 73. A rare, hard, blue grey, lustrous, transition metal, tantalum is highly corrosion resistant and occurs naturally in the… …
86Lutetium — (pronEng|ljuːˈtiːʃiəm) is a chemical element with the symbol Lu and atomic number 71. A silvery white rare metal, lutetium is the heaviest member of the rare earth group.Parker, Sybil P., ed. Dictionary of Scientific and Technical Terms. 3rd ed.… …
87Terbium — (pronEng|ˈtɝbiəm) is a chemical element with the symbol Tb and atomic number 65. Characteristics Terbium is a silvery white rare earth metal that is malleable, ductile and soft enough to be cut with a knife. It is reasonably stable in air (it… …
88Decay chain — In nuclear science, the decay chain refers to the radioactive decay of different discrete radioactive decay products as a chained series of transformations. Most radioactive elements do not decay directly to a stable state, but rather undergo a… …
89Isotopes of radium — Radium (Ra) has no stable isotopes. A standard atomic mass cannot be given. The longest lived, and most common, isotope of radium is 226Ra with a half life of 1600 years. 226Ra occurs in the disintegration chain of 238U (often referred to as the… …
90Isotopes of mercury — There are seven stable isotopes of mercury (Hg) with 202Hg being the most abundant (29.86%). The longest lived radioisotopes are 194Hg with a half life of 444 years, and 203Hg with a half life of 46.612 days. Most of the remaining radioisotopes… …
