TIN Sn Z = 50

This element has been known since antiquity. The Latin word for tin is stannum.

Ionization energies
SnI 7.3 eV, SnII 14.6 eV, SnIII 30.5 eV.

Absorption lines of SnI
The equivalent width of SnI 3801(2) line in the sun is 0.006.

Absorption lines of SnII

Table 1. Equivalent widths of SnII 6454(1)

Group III

K0 0.017
K3 0.024

Note: Note that there exists an atmospheric absorption band near this line.

Behavior in non-normal stars
Adelman et al. (1979) announced SnI to be probably present in one Ap star of the Cr-Eu-Sr subgroup.

Sn has ten stable isotopes, Sn 112, 114, 115, 116, 117, 118, 119, 120, 122 and 124, as well as 18 short-lived isotopes and isomers. In the solar system the respective frequencies are 1%, 1%, 0.4%, 15%, 8%, 24%, 9%,32%, 5% and 5%. Among the unstable isotopes, Sn26 has a half life of 105 years.

Sn can be produced by the p, s and r processes. Pure r process products are Sn122 and Snl24. Sn 116,117,118,119 and 120 are produced by both the r process and the s process. Sn112 iS a pure p process product, Sn114 iS produced by either the p process or the s process and Sn115 by the r, s or p processes.

Published in "The Behavior of Chemical Elements in Stars", Carlos Jaschek and Mercedes Jaschek, 1995, Cambridge University Press.