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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 Atomic Mass (u)
2473.15 Melting Point (K)
5150 Boiling Point (K)
11 Density (solid: g/cm³, gas: g/liter)
2 Atomic Radius (Å)
1.47 Covalent Radius (Å)
1.9 Electronegativity
7.28 First Ionization Energy (eV)
53 Electron Affinity
5 Number of Shells
2, 8, 18, 13, 2 Electron Shell Occupations