89
Ac
Actinium
Series: Actinide
Mass: 227.0278 g·mol−1 (mass of most stable isotope)
Discovered: 1899
Melting Point: 1046.85 C (1320 K)
Boiling Point: 3197.85 C (3471 K)
View pictures of Actinium at the Wooden Periodic Table.
Read about Actinium on Wikipedia.

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Copyright 2008 Mark Ivey. Based on data retrieved from Wikipedia.

Sat Sep 12 17:41:34 2015