Tc 43 Technetium

absolutely rare technetium metal in ampoule, only from novaelements.com

Technetium is the first element without stable isotopes. In Earth's crust it exists due to natural uranium decay, on Earth's surface as consequence of nuclear explosions. The long-lived isotope 98Tc has a half-life of 4.3 million years, which makes technetium moderately good researchable. It is a silvery, hard, relatively noble metal with attributes similar to rhenium. It has its most important application in medicine, where the isomer Tc-99 is a main substance for radio-diagnosis. It is made synthetically. 

 

 

 

 

 

Representative sample of few micrograms of Tc-99 sample sealed in ampoule and casted in resina.

 

 

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