nuclear isomer
121Fluorchemie — Eigenschaften …
122Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta …
123Isotopes of hydrogen — Hydrogen (H) (Standard atomic mass: 1.00794(7) u) has three naturally occurring isotopes, denoted 1H, 2H, and 3H. Other, highly unstable nuclei (4H to 7H) have been synthesized in the laboratory but not observed in nature.Gurov YB, Aleshkin DV,… …
124Isotopes of lithium — Naturally occurring lithium (Li) (standard atomic mass: 6.941(2) u) is composed of two stable isotopes (SimpleNuclide|Lithium|6 and SimpleNuclide|Lithium|7, the latter being the more abundant (92.5% natural abundance). Seven radioisotopes have… …
125Isotopes of xenon — Naturally occurring xenon (Xe) is made of nine stable isotopes. (124Xe, 134Xe and 136Xe are predicted to undergo double beta decay, but this has never been observed, so they are considered to be stable.) [… …
126Isotopes of strontium — The alkali earth metal strontium (Sr) has four stable, naturally occurring isotopes:84Sr (0.56%), 86Sr (9.86%), 87Sr (7.0%) and 88Sr (82.58%). Only 87Sr is radiogenic; it is produced by decay from the radioactive alkali metal 87Rb, which has a… …
127Isotopes of krypton — There are 31 known isotopes of krypton (Kr). [cite web |url=http://ie.lbl.gov/education/parent/Kr iso.htm |title=Isotopes of Krypton |accessdate=2007 03 20 |publisher=Nuclear Science Division] Naturally occurring krypton is made of five stable… …
128Isotopes of oxygen — Late in a massive star s life, 16O concentrates in the O shell, 17O in the H shell and 18O in the He shell There are three stable isotopes of oxygen that lead to oxygen (O) having a standard atomic mass of 15.9994(3) u. 17 radioactive isotopes… …
