Video: Vim li cas Aluminium thiaj li melting point ntau dua li sodium?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nyob rau tib lub sijhawm, valency nce (los ntawm valency 1 in sodium rau valency 3in aluminium ) yog li cov hlau atoms tuaj yeem delocalise ntau cov electrons los tsim cov cations zoo dua thiab loj dua hiav txwv ntawm delocalised electrons. Yog li ntawd metallic daim ntawv cog lus yuav muaj zog thiab melting point nce los ntawm sodium rau aluminium.
Yog li ntawd, vim li cas magnesium thiaj li melting point ntau dua li Aluminium?
Sodium, magnesium thiab aluminium Lawv muaj metallic bonding, nyob rau hauv uas lub nuclei ntawm hlau atoms attracted rau delocalised electrons. tus naj npawb ntawm delocalised electrons nce … yog li lub zog ntawm cov hlau nplaum sib txuas ntxiv thiab … cov melting cov ntsiab lus thiab cov ntsiab lus kub nce.
Ib yam li ntawd, yog vim li cas sodium thiaj li melting point? Sodium Chloride muaj lub siab melting point , raws li nws muaj qhov loj heev ionic lattice li no muaj muaj zog electrostatic zog ntawm attraction ntawm oppositely them ions, uas yuav tsum tau ntau lub zog los kov yeej cov rog.
Ib tug kuj nug, puas yog Aluminium muaj qhov siab lossis qis melting point?
Lub zog tawm los ntawm ntshiab aluminium yog 7-11 MPa, thaum aluminium alloys muaj yield zog li ntawm 200 MPa rau 600 MPa. Aluminium yog ductile, thiab malleable cia nws yooj yim kos thiab extruded. Nws kuj yog yooj yim machined, thiab cov qis melting kub ntawm 660 ° C tso cai rau kom yooj yim casting.
Puas yog sodium muaj qhov melting ntau dua li magnesium?
Siv lub hiav txwv ntawm electrons qauv piav qhia vim li cas Magnesium muaj qhov melting point ntau dua (650 ° C) tshaj li sodium (97.79 ° C). Yog tias koj ua haujlwm los ntawm tib qhov kev sib cav saum toj no rau sodium nrog magnesium , koj xaus nrog cov ntawv cog lus muaj zog thiab yog li a siab melting point . Magnesium muaj cov txheej txheem hluav taws xob sab nraud 3s2.
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