Technetium (Tc) - Chemical properties | 就愛喝咖啡
![Technetium (Tc) - Chemical properties](https://i.imgur.com/B2oemyF.jpg)
Technetiumisasilvery-graymetalthattarnishesslowlyinmoistair.Thecommonoxidationstatesoftechnetiumare+7,+5,and+4.
![Technetium (Tc) - Chemical properties](https://i.imgur.com/B2oemyF.jpg)
Technetium is a silvery-gray metal that tarnishes slowly in moist air. The common oxidation states of technetium are +7, +5, and +4. Under oxidizing conditions technetium (VII) will exist as the pertechnetate ion, TcO4-. The chemistry of technetium is said to be similar to that of rhenium[1]. Technetium dissolves in nitric acid, aqua regia, and conc. sulfuric acid, but is not soluble in hydrochloric acid of any strength. The element is a remarkable corrosion inhibitor for steel. The metal is an excellent superconductor at 11K and below.
There are twenty-two reported isotopes of technetium with masses ranging from 90 to 111. All the isotopes of technetium are radioactive. It is one of two elements with Z < 83 that have no stable isotopes; the other element is promethium (Z = 61). Technetium has three long lived radioactive isotopes: 97Tc (T1/2 =2.6 x 106 years), 98Tc (T1/2 = ...
Technetium | 就愛喝咖啡
Technetium | 就愛喝咖啡
Technetium | 就愛喝咖啡
Technetium | 就愛喝咖啡
Technetium (Tc) - Chemical properties | 就愛喝咖啡
Technetium-99m | 就愛喝咖啡
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