Periodic Table of the Elements: Technetium

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Periodic Table of the Elements: Technetium
Atomic Number:43
Atomic Symbol:Tc
 Technetiumtechnetium
[Gr. technetos=artificial], artificially produced radioactive chemical element; symbol Tc; at. no. 43; mass no. of most stable isotope 98; m.p. 2,200&degC;; b.p. 4,877&degC;; sp. gr. 11.5 (calculated); valence +4, +6, or +7.
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Atomic Weight:(98)
Electron Configuration:2 · 8 · 18 13 · 2