Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 146. Not illustrated. Chapters: Rhodium-103, Rhodium-100, Rhodium-101, Rhodium-102, Rhodium-104, Rhodium-105, Rhodium-106, Rhodium-107, Rhodium-108, Rhodium-109, Rhodium-110, Rhodium-111, Rhodium-112, Rhodium-113, Rhodium-114, Rhodium-115, Rhodium-116, Rhodium-117, Rhodium-118, Rhodium-119, Rhodium-120, Rhodium-121, Rhodium-122, Rhodium-89, Rhodium-90, Rhodium-91, Rhodium-92, Rhodium-93, Rhodium-94, Rhodium-95, Rhodium-96, Rhodium-97, Rhodium-98, Rhodium-99, . Excerpt: Naturally occurring rhodium (Rh) is composed of only one stable isotope, Rh. The most stable radioisotopes are Rh with a half-life of 3.3 years, Rh with a half-life of 207 days, Rh with a half-life of 2.9 years, and Rh with a half-life of 16.1 days. Twenty other radioisotopes have been characterized with atomic weights ranging from 92.926 u (Rh) to 116.925 u (Rh). Most of these have half-lifes that are less than an hour except Rh (half-life: 20.8 hours) and Rh (half-life: 35.36 hours). There are also numerous meta states with the most stable being Rh (0.141 MeV) with a half-life of about 207 days and Rh (0.157 MeV) with a half-life of 4.34 days. The primary decay mode before the only stable isotope, Rh, is electron capture and the primary mode after is beta emission. The primary decay product before Rh is ruthenium and the primary product after is palladium.Standard atomic mass: 102.90550(2)