kub vs platinum
Kub thiab platinum suav hais tias yog cov hlau siv los ua cov hniav nyiaj hniav kub, thiab lawv kim heev. Ob qho tib si yog cov ntsiab lus tsis tshua muaj tshwm sim thiab yog qhov zoo tagnrho rau jewelleries.
kub
Kub yog ib qho kev hloov pauv hlau nrog cov cim tshuaj Au. Au yog los ntawm lo lus Latin 'aurum' uas txhais tau tias 'ci ntsa iab'. Kub yog nyob rau hauv pawg 11 ntawm lub sij hawm lub sij hawm, thiab nws atomic tooj yog 79. Nws electron configuration yog [Xe] 4f14 5d10 6s 1 Kub yog cov hlau ci uas muaj xim daj xim hlau. Tsis tas li ntawd, nws yog cov hlau uas tuaj yeem ua tau thiab ua tau zoo.
Gold yog dav siv los ua cov hniav nyiaj hniav kub thiab cov mlom. Nws yog suav hais tias yog ib qho khoom muaj nqis heev. Ib qho ntawm cov khoom tseem ceeb ntawm kub yog nws qhov tsis tshua muaj zog. Kub tsis hnov mob nrog ya raws thiab oxygen hauv huab cua. Yog li ntawd, txawm ntev npaum li cas nws raug huab cua, kub oxide txheej yuav tsis raug tsim; yog li ntawd, nws cov xim tsis ploj los yog hloov.
Vim kub tsis hnov mob nrog lwm yam tshuaj yooj yim, nws tshwm sim raws li cov khoom dawb hauv qhov xwm txheej. Cov khoom kub yog pom nyob rau hauv pob zeb. Johannesburg, South Africa muaj ib qho ntawm cov nyiaj kub loj tshaj plaws. Tsis tas li ntawd, Russia, Tebchaws Meskas, Australia, thiab Peru yog cov neeg tsim khoom kub hauv ntiaj teb.
Kub tsim cov hlau nrog lwm cov hlau yooj yim. Kub muaj +1 thiab +3 oxidation xeev feem ntau. Kub ions nyob rau hauv ib qho kev daws tau yooj yim txo mus rau 0 oxidation lub xeev, yog li kub yuav precipitated tawm. 197Au yog tib qho isotope ruaj khov ntawm kub. Ntawm cov ntawv thov kub, nws tau siv rau ntau pua xyoo. Nws tau suav hais tias muaj nuj nqis los ntawm keeb kwm thiab tau raug siv los ua txiaj. Thaum ua cov hniav nyiaj hniav kub, cov kub ntshiab (24k) tsis siv. Feem ntau nws yog alloyed nrog rau lwm yam hlau thiab 22k, 18k, 9k thiab lwm yam kub yog siv rau jewellery ua txheej txheem.
Platinum
Platinum lossis Pt yog cov hlau hloov pauv nrog tus lej atomic 78. Nyob rau hauv lub rooj zaum, nws yog nyob rau hauv pawg nrog Nickel thiab Palladium. Yog li muaj hluav taws xob configuration zoo ib yam li Ni nrog rau sab nrauv orbitals muaj s2 d8 kev npaj. Platinum, feem ntau, cov ntaub ntawv +2 thiab +4 oxidation xeev. Nws tuaj yeem tsim +1 thiab +3 oxidation xeev.
Platinum yog silvery dawb nyob rau hauv cov xim thiab muaj ib tug ntau dua ntom ntom. Nws muaj rau isotopes. Ntawm cov no, feem ntau yog ib qho yog 195 Pt. Atomic loj ntawm Platinum yog txog 195 gmol-1 Platinum tsis oxidize lossis hnov mob nrog HCl lossis nitric acid. Nws yog heev resistant rau corrosion. Pt kuj tuaj yeem tiv taus qhov kub siab heev yam tsis muaj melting. (Nws melting point yog 1768.3 ° C) Tsis tas li ntawd, nws yog paramagnetic.
Platinum yog cov hlau tsis tshua muaj, uas yog siv los ua cov hniav nyiaj hniav kub. Platinum jewelery tseem hu ua dawb kub jewelery thiab yog kim heev. Tsis tas li ntawd nws tuaj yeem siv los ua cov electrode hauv electrochemical sensors, thiab hlwb. Platinum yog ib qho zoo rau kev siv tshuaj lom neeg. South Africa yog tus thib ib tus tsim ntawm platinum hlau.
kub vs platinum
