More on Tl from Fact Monster:

• Periodic Table of the Elements: Thallium - Periodic Table of the Elements: Thallium Atomic Number: 81 Atomic Symbol: Tl Thallium Atomic ...
• thallium - thallium thallium , metallic chemical element; symbol Tl; at. no. 81; at. wt. 204.383; m.p. ...
• Robert MORRIS - MORRIS, Robert (1734—1806) Senate Years of Service: 1789-1795 Party: Pro-Administration ...
• Elements (table) - Elements Element Symbol Atomic Number Atomic Weight1 Melting Point Boiling Point actinium Ac 89 ...
• Chemical Elements Table - Chemical Elements Table See the interactive periodic table. Element Sym- bol Atomic no. Atomic wt. ...

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