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TechnetiumTc Electron 1 Electron 2 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 9 Electron 10 Electron 11 Electron 12 Electron 13 Electron 14 Electron 15 Electron 16 Electron 17 Electron 18 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 9 Electron 10 Electron 11 Electron 12 Electron 13 Electron 1 Electron 2

Technetium (/tɛkˈniːʃiəm/) is a chemical element with symbol Tc and atomic number 43. It is the element with the lowest atomic number in the periodic table that has no stable isotopes:every form of it is radioactive. Nearly all technetium is produced synthetically, and only minute amounts are found in nature.

43 Atomic Number
98  u Atomic Mass
2473.15  K Melting Point
5150  K Boiling Point
11  g/cm³ Density
2  Å Atomic Radius
1.47  Å Covalent Radius
1.9 Electronegativity
7.28  eV First Ionization Energy
53 Electron Affinity
5 Number of Shells
2, 8, 18, 13, 2 Electron Shell Occupations
null  J/g Specific Heat