43
Tc
Technetium
Series: Transition metal
Mass: 98.9063 g·mol−1 (mass of most stable isotope)
Discovered: 1937
Melting Point: 2196.85 C (2470 K)
Boiling Point: 4876.85 C (5150 K)

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Sat Sep 12 17:41:34 2015