This element was discovered by A. G. Ekeberg at Uppsala, Sweden. The name comes from Tantalus, who was a god, father of Niobe.
TaI 7.9 eV, TaII 15.5 eV.
Behavior in stars
TaI is present in someBa stars (Lambert 1985, Smith 1984).
Ta has two stable isotopes, Ta180 and Ta181, as well as 16 short-lived isotopes and isomers. In the solar system Ta181 occurs with a frequency of 99.99%.
Ta180 can be produced by the p process, the r process or the s process, Ta181 only by the r process and the s process.
Published in "The Behavior of Chemical Elements in Stars", Carlos Jaschek and Mercedes Jaschek, 1995, Cambridge University Press.