Video: Puas yog platinum ua kua?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
thaum ua kua (ntawm mp.) 2800 m / s (ntawm r.t.) Platinum yog ib yam tshuaj caij lub cim Pt thiab atomic tooj 78. Nws yog ib tug ntom, malleable, zas, mas unreactive, precious, silverish-dawb txoj kev hloov hlau.
Tib neeg kuj nug, puas yog platinum khoom lossis kua?
Cov ntsiab lus tuaj yeem raug cais raws li lawv lub cev lub xeev (States of Matter) e.g. gas , khoom los yog kua. Cov khoom no yog ib qho khoom. Platinum yog cais raws li "Kev Hloov Hlau" uas nyob hauv Pawg 3 - 12 ntawm Lub Sij Hawm Lub Sij Hawm.
Ib tug kuj nug, siv platinum li cas? Platinum yog dav siv raws li ib tug catalyst rau tshuaj tiv thaiv. Platinum yog siv hauv cov hniav nyiaj hniav kub, kho kom zoo nkauj thiab kho hniav. Cov hlau thiab nws cov alloys kuj yog siv rau kev sib cuag hluav taws xob, cov xov hlau tsis zoo thiab cov cuab yeej kho mob / kuaj. Ib qho alloy ntawm platinum thiab cobalt yog siv los tsim cov hlau nplaum ruaj khov.
Ib yam li ntawd, kev faib tawm ntawm platinum yog dab tsi?
Platinum yog lub caij thib peb ntawm kab thib kaum hauv lub caij nyoog. Nws yog cais raws li kev hloov hlau. Platinum atoms muaj 78 electrons thiab 78 protons nrog 117 neutrons nyob rau hauv cov isotope ntau tshaj. Nws suav hais tias yog ib qho khoom muaj txiaj ntsig zoo nrog rau nyiaj thiab kub.
Puas yog platinum tus neeg xyuas pib?
Ib qho zoo tus thawj coj ntawm hluav taws xob, platinum kuj yog malleable (tuaj yeem tsim yam tsis muaj kev tawg) thiab ductile (tuaj yeem deformed yam tsis poob lub zog). Platinum raug suav hais tias yog cov hlau uas muaj roj ntsha vim nws tsis muaj tshuaj lom thiab ruaj khov, yog li nws tsis hnov mob lossis cuam tshuam rau lub cev nqaij daim tawv.
Pom zoo:
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