Arsenic yog cov khoom siv tshuaj nrog lub cim As thiab tus lej atomic 33. Arsenic tshwm sim hauv ntau cov zaub mov, feem ntau yog ua ke nrog sulfur thiab hlau, tab sis kuj yog ib qho ntshiab elemental siv lead ua. Arsenic yog metalloid.
Vim li cas arsenic boiling point thiab melting point?
Arsenic siv lead ua. …Ceeb Toom: Qhov boiling point yog qhov qis dua qhov melting point vim arsenic hloov theem ncaj qha los ntawm cov khoom mus rau cov roj nyob rau hauv ib txwm atmospheric siab. Nws yuav tsum muaj qhov siab ntawm 28 atm txhawm rau txhawm rau hloov theem ntawm cov khoom mus rau cov kua, yog li qhov kub siab dua.
Vim li cas arsenic thiaj li melting point?
Melting point los ntawm nitrogen mus rau arsenic nce & los ntawm arsenic nws txo mus rau bismuth vim hais tias cov pab pawg raws li qhov luaj li cas ntawm lub cov ntsiab lus tsub kom lub siab nyiam ntawm cov ntsiab los tsim peb covalent bonds nce (inert khub effect).
YPuas selenium npub lossis ci?
Amorphous selenium yog xim liab, hauv daim ntawv hmoov, lossis dub, hauv vitreous, lossis iav, daim ntawv. Daim ntawv ruaj khov tshaj plaws ntawm lub caij, crystalline hexagonalselenium, yog xim hlau grey, thaum crystalline monoclinic selenium yog xim liab.
Vim li cas selenium thiaj li hu ua lub hli?
Nws yog Berzelius uas pom selenium hauv xyoo 1817, ua ib qho impurity hauv sulfuric acid. Tellurium twb tau tshawb pom lawm, thiab muab lub npe los ntawm Greek lo lus rau lub ntiaj teb, yog li nws hu ua selenium siv lo lus Greekrau hli, selene.
