Element Technetium (Tc)

Atomic number 43 · transition metal · Atomic mass 98 u

Atomic Mass
98.0000 u
Element Properties
Atomic Number 43
Atomic Mass 98.0000 u
Category transition metal / 过渡金属
Group 7
Period 5
Block D
Electron Configuration [Kr] 4d⁵ 5s²
Electronegativity (Pauling) 1.9
Phase at STP Solid
Density 11.5 g/cm³
Year Discovered 1937

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