Dab tsi yog qhov tshwj xeeb ntawm technetium?
Dab tsi yog qhov tshwj xeeb ntawm technetium?

Video: Dab tsi yog qhov tshwj xeeb ntawm technetium?

Video: Dab tsi yog qhov tshwj xeeb ntawm technetium?
Video: Tshwj Xeeb Vwj NKauj Tawm Tshiab ---- Ua Hluas Tsis Dhuav Official 2024, Lub peb hlis ntuj
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Technetium yog lub lightest radioactive caij nyob rau hauv lub sij hawm thiab nws cov isotopes lwj mus rau ntau yam ntawm lwm yam xws li ruaj khov ruthenium. Qhov txiaj ntsig loj ntawm technetium -99m (ib nrab-lub neej rau teev) yog tias nws yog tsim los ntawm kev lwj los ntawm lub neej ntev dua isotope molybdenum-99 (ib nrab-lub neej 67 teev).

Tsis tas li ntawd, koj tuaj yeem qhia dab tsi txog cov khoom ntawm technetium?

Cov cuab yeej ntawm technetium Technetium yog silvery-grey hloov hlau. Nws tarnishes maj mam nyob rau hauv cov huab cua noo. Nws dissolves nyob rau hauv nitric acid, aqua regia (nitro-hydrochloric acid) thiab concentrated sulfuric acid, tab sis tsis soluble nyob rau hauv tej lub zog ntawm hydrochloric acid. Technetium cov Feem ntau oxidation xeev yog +7, +5, thiab +4.

Kuj Paub, technetium zoo li cas? Technetium yog ib tug silvery-grey hlau uas tarnishes maj mam nyob rau hauv cov huab cua noo. Cov feem ntau oxidation xeev ntawm technetium yog +7, +5, +4. Nyob rau hauv cov xwm txheej oxidizing technetium (VII) yuav muaj raws li pertechnetate ion, TcO4-. Chemistry ntawm technetium yog hais rau yuav zoo ib yam li uas rhenium.

Ntawm no, yog technetium ntuj lossis hluavtaws?

Nws yog lub teeb tshaj plaws uas nws cov isotopes yog tag nrho cov xov tooj cua; tsis muaj qhov ruaj khov dua li lub xeev ionized tag nrho 97Tc. Yuav luag tag nrho technetium yog tsim los ua ib hluavtaws lub caij, thiab tsuas yog kwv yees li 18,000 tons tau kwv yees tias muaj nyob rau txhua lub sijhawm hauv lub ntiaj teb pob zeb.

Leej twg pom technetium?

Carlo Perrier Emilio Segrè

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