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Technetium is the seventh group in periodic table and placed in between rhenium and manganese. The scientist was predicted that the chemical property of the element Technetium is very much similar to these two elements. I these two elements, technetium is more close to rhenium, especially in chemical tendency and inertness of forming covalent bonds. Like manganese, technetium does not readily form ions.
There are three oxidation state of Technetium are +7, +5, +4. By the oxidation process, technetium will exist as pertechnetate ion, chemical formula as TcO4. Technetium has dissolving property in some solutions like nitric acid, aqua regia (known as nitro-hydrochloric acid), concentrate sulfuric acid. Note that this element is not soluble in hydrochloric acid at any power. The element is corrosion inhibitor with steel. Technetium reacts with fluorine gas and sulfur at the high temperature. Also this element has characteristic spectral lines at 363nm, 403nm, 410 nm, 426 nm, 430 nm and 485nm.
General Chemical Properties of Technetium are,
Electrochemical Equivalent: 0.51651 g/amp hr
Electronegativity: 1.9 (Pauling)
Heat of Fusion: 24kJ/mol
Ionization Potential - First: 7.28
Second: 15.26
Third: 29.54
Valence Electron Potential (-eV): 180 |
Properties