Qhov sib txawv tseem ceeb ntawm selenium thiab tellurium yog tias selenium yog tsis yog hlau, hos tellurium yog metalloid.
Selenium thiab tellurium yog cov tshuaj muaj nyob rau hauv p-block ntawm lub sijhawm teem sijhawm. Tellurium yog metalloid thiab selenium kuj qee zaum suav tias yog metalloid, tab sis nws yog ib qho tsis yog hlau. Ob leeg no yog nyob rau hauv solid-state ntawm chav tsev kub.
Selenium yog dab tsi?
Selenium yog cov khoom siv tshuaj muaj tus lej atomic 34 thiab cov cim tshuaj Se. Nws yog ib qho uas tsis yog-hlau uas yog nyob rau hauv p-block ntawm lub sij hawm. Muaj ntau hom allotropic ntawm selenium, xws li dub, liab, thiab grey selenium. Peb tuaj yeem pom cov khoom no yog cov khoom ntshiab lossis ua ib feem ntawm nws cov ore ntawm lub ntiaj teb lub pob zeb. E.g. hlau sulfide ore.
Ntxiv mus, Selenium muaj ob peb daim ntawv allotropic uas cuam tshuam nrog kev hloov pauv kub. Ntawm cov allotropes, grey selenium yog daim ntawv ruaj khov thiab ntom. Yog tias peb npaj cov khoom no hauv chav kuaj, peb tau txais cov hmoov amorphous uas tshwm hauv cov xim liab cib. Thaum xav txog cov isotopes ntawm selenium, nws muaj xya isotopes ruaj khov uas tshwm sim ib txwm muaj. Selenium-80 isotope muaj ntau tshaj plaws ntawm lawv. Tsis tas li ntawd, muaj qee cov xov tooj cua isotopic ntawm selenium, ib yam nkaus.
Daim duab 01: Allotropes ntawm Selenium
Hais txog cov ntawv thov, selenium yog ib qho tseem ceeb hauv manganese electrolysis kom txo tau lub zog uas yuav tsum tau ua los ua haujlwm cov hlwb electrolytic. Tsis tas li ntawd, ib qho kev siv ntau tshaj plaws ntawm selenium yog nyob rau hauv iav ntau lawm; nws muab xim liab rau lub khob. Nws kuj tseem muaj txiaj ntsig zoo hauv kev tsim cov alloys txhawm rau hloov cov khoom siv tshuaj lom neeg xws li txhuas. Ntxiv mus, selenium yog ib qho tseem ceeb hauv kev tsim cov hnub ci hnub ci ua ib feem ntawm tooj liab indium gallium selenide. Txawm li cas los xij, cov ntsev ntawm selenium yog tshuaj lom. Txawm li cas los xij, cov lej ntawm selenium yuav tsum tau ua rau kev ua haujlwm ntawm tes hauv cov kab mob xws li tsiaj.
Tellurium yog dab tsi?
Tellurium yog cov khoom siv tshuaj muaj tus lej atomic 52 thiab cov cim tshuaj Te. Nws yog ib tug metalloid uas tshwm nyob rau hauv ib tug silver-dawb xim. Tsis tas li ntawd, cov khoom no yog nkig, me ntsis lom, thiab tsis tshua muaj nyob rau hauv qhov zoo li. Tsis tas li ntawd, nws muaj ob daim ntawv allotropic; daim ntawv crystalline thiab amorphous daim ntawv. Xav txog nws cov isotopes, tellurium muaj yim isotopes uas tshwm sim ib txwm muaj. Ntawm cov isotopes, rau yog qhov ruaj khov heev thaum lwm tus ob yog cov xov tooj cua. Tab sis, lawv tsuas yog me ntsis xov tooj cua vim lawv muaj ib nrab hnub ntev. Muaj kwv yees li 31 cov khoom siv hluav taws xob hluav taws xob hluav taws xob ntawm tellurium ib yam nkaus.
Tsis tas li ntawd, tellurium yog cov khoom siv semiconductor. Nyob ntawm qhov kev npaj ntawm atomic, nws qhia tau hais tias muaj ntau dua conductivity nyob rau hauv ib co kev taw qhia. Tsis tas li ntawd, cov conductivity nce thaum raug lub teeb. Txawm li cas los xij, tsis zoo li selenium, tellurium tsis muaj kev ua haujlwm lom neeg.
Daim duab 02: Qhov tshwm sim ntawm Tellurium
Thaum xav txog cov ntawv thov ntawm tellurium, nws yog ib qho tseem ceeb raws li cov khoom siv hlau, ua ib qho khoom siv, ua cov xim rau cov ceramics, ua oxidizer, ua iodine-131, thiab lwm yam.
Qhov txawv ntawm Selenium thiab Tellurium yog dab tsi?
Selenium thiab tellurium yog cov khoom siv tshuaj uas nyob ib sab ntawm ib leeg hauv tib pab pawg hauv lub rooj zaum, pawg 16. Qhov sib txawv tseem ceeb ntawm selenium thiab tellurium yog selenium yog cov hlau tsis yog hlau, whereas tellurium yog ib qho tseem ceeb ntawm selenium thiab tellurium. metalloid.
Ntxiv mus, selenium yuav tsum muaj nyob rau hauv cov lej rau kev ua haujlwm lom neeg hauv hlwb ntawm cov tsiaj feem ntau, tab sis tellurium tsis muaj kev ua haujlwm lom neeg. Thaum xav txog cov kev siv ntawm tellurium, nws yog ib qho tseem ceeb raws li ib tug alloying caij, raws li ib tug semiconductor, raws li pigments rau ceramics, raws li ib tug oxidizer, ua iodine-131, thiab lwm yam.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm selenium thiab tellurium.
Summary – Selenium vs Tellurium
Selenium thiab tellurium yog cov khoom siv tshuaj uas nyob ib sab ntawm ib leeg hauv tib pab pawg hauv lub rooj zaum, pawg 16. Qhov sib txawv tseem ceeb ntawm selenium thiab tellurium yog selenium yog cov hlau tsis yog hlau whereas tellurium yog metalloid..
