Qhov sib txawv tseem ceeb ntawm zinc thiab magnesium yog zinc yog hlau tom qab hloov pauv, thaum magnesium yog alkaline ntiaj teb hlau.
Zinc thiab magnesium yog cov tshuaj lom neeg ntawm lub sijhawm teem sijhawm. Cov tshuaj no tshwm sim feem ntau yog hlau. Txawm li cas los xij, lawv muaj cov tshuaj lom neeg thiab lub cev sib txawv vim muaj cov khoom siv hluav taws xob sib txawv.
Zinc yog dab tsi?
Zinc yog cov khoom siv tshuaj muaj tus lej atomic 30 thiab cov cim tshuaj Zn. Cov tshuaj no zoo li magnesium thaum peb xav txog nws cov khoom siv tshuaj. Qhov no feem ntau yog vim hais tias ob qho tib si cov ntsiab lus qhia txog +2 oxidation xeev raws li lub xeev oxidation ruaj khov, thiab Mg + 2 thiab Zn + 2 cations yog qhov loj sib xws. Ntxiv mus, qhov no yog 24th feem ntau cov tshuaj lom neeg nyob rau hauv lub ntiaj teb crust.
Tus qauv atomic hnyav ntawm zinc yog 65.38, thiab nws zoo li cov nyiaj-grey khoom. Nws yog nyob rau hauv pawg 12 thiab lub sij hawm 4 ntawm lub periodic table. Cov tshuaj no belongs rau d block ntawm cov ntsiab lus, thiab nws los nyob rau hauv lub post-transition hlau qeb. Ntxiv mus, zinc yog ib qho khoom ntawm tus qauv kub thiab siab. Nws muaj cov qauv siv lead ua hexagonal kaw-packed qauv.
Zinc hlau yog cov hlau diamagnetic thiab muaj lub ntsej muag xiav-dawb ci ntsa iab. Feem ntau qhov kub thiab txias, cov hlau no yog tawv thiab nkig. Txawm li cas los xij, nws dhau los ua malleable, ntawm 100 thiab 150 ° C. Tsis tas li ntawd, qhov no yog qhov ncaj ncees conductor ntawm hluav taws xob. Txawm li cas los xij, nws muaj qis melting thiab boiling ntsiab lus thaum piv rau feem ntau lwm yam hlau.
Thaum xav txog qhov tshwm sim ntawm cov hlau no, lub ntiaj teb pob zeb muaj li 0.0075% ntawm zinc. Peb tuaj yeem pom cov khoom no hauv av, dej hiav txwv, tooj liab, thiab cov hlau lead, thiab lwm yam. Tsis tas li ntawd, cov khoom no feem ntau pom muaj nyob rau hauv kev sib xyaw nrog sulfur.
Magnesium yog dab tsi?
Magnesium yog cov tshuaj lom neeg muaj tus lej atomic 12 thiab cov cim tshuaj Mg. Cov tshuaj no tshwm sim raws li ib tug grey-ci ci khoom nyob rau hauv chav tsev kub. Nws yog nyob rau hauv pawg 2, lub sij hawm 3, nyob rau hauv lub periodic table. Yog li ntawd, peb tuaj yeem hu nws ua s-block keeb. Tsis tas li ntawd, magnesium yog ib qho alkaline ntiaj teb hlau (pab pawg 2 tshuaj muaj npe hu ua alkaline ntiaj teb hlau). Lub teeb tsa hluav taws xob ntawm cov hlau no yog [Ne]3s2.
Magnesium hlau yog ib qho tshuaj lom neeg ntau hauv lub ntiaj teb. Lawm, cov hlau no tshwm sim ua ke nrog lwm cov tshuaj. Tsis tas li ntawd, lub xeev oxidation ntawm magnesium yog +2. Cov hlau dawb yog cov reactive heev, tab sis peb tuaj yeem tsim nws ua cov khoom siv hluavtaws. Nws tuaj yeem hlawv, ua kom lub teeb ci heev. Peb hu nws lub teeb dawb ci ntsa iab. Peb tuaj yeem tau txais magnesium los ntawm electrolysis ntawm magnesium ntsev. Cov ntsev magnesium no tuaj yeem tau los ntawm brine.
Magnesium yog cov hlau hnyav, thiab nws muaj qhov qis tshaj plaws rau melting thiab boiling cov ntsiab lus ntawm alkaline ntiaj teb hlau. Cov hlau no kuj yog nkig thiab yooj yim undergoes tawg nrog rau shear bands. Thaum nws yog alloyed nrog aluminium, lub alloy yuav ductile heev.
Cov tshuaj tiv thaiv ntawm magnesium thiab dej tsis nrawm li calcium thiab lwm yam alkaline ntiaj teb hlau. Thaum peb submerge ib daim ntawm magnesium hauv dej, peb tuaj yeem pom cov npuas hydrogen tawm ntawm cov hlau. Txawm li cas los xij, cov tshuaj tiv thaiv nrawm nrog dej kub. Ntxiv mus, cov hlau no tuaj yeem hnov mob nrog acids exothermally, e.g., hydrochloric acid (HCl).
Qhov txawv ntawm Zinc thiab Magnesium yog dab tsi?
Zinc thiab magnesium yog cov tshuaj lom neeg ntawm lub sijhawm teem sijhawm. Zinc yog cov khoom siv tshuaj muaj atomic tooj 30 thiab cov cim tshuaj Zn, thaum magnesium yog cov khoom siv tshuaj muaj atomic tooj 12 thiab cov cim tshuaj Mg. Qhov sib txawv tseem ceeb ntawm zinc thiab magnesium yog zinc yog hlau tom qab hloov pauv, thaum magnesium yog alkaline ntiaj teb hlau. Ntxiv mus, zinc yog siv nyob rau hauv zus tau tej cov alloys, galvanizing, tsheb qhov chaw, hluav taws xob Cheebtsam, thiab lwm yam, thaum magnesium yog siv raws li ib feem ntawm txhuas alloys. Qhov no suav nrog cov alloys siv nyob rau hauv aluminium haus cov kaus poom. Magnesium, alloyed nrog zinc, yog siv nyob rau hauv tuag casting.
Cov lus hauv qab no qhia txog qhov sib txawv ntawm zinc thiab magnesium.
Summary – Zinc vs Magnesium
Zinc thiab magnesium yog cov tshuaj lom neeg ntawm lub sijhawm teem sijhawm. Qhov sib txawv tseem ceeb ntawm zinc thiab magnesium yog zinc yog hlau tom qab hloov pauv, thaum magnesium yog alkaline ntiaj teb hlau.
