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Video: Dab tsi yog cov ntsiab lus hauv cov pa roj carbon?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov ntsiab lus tseem ceeb: Carbon Family of Elements
- Cov pa roj carbon tsev neeg muaj cov ntsiab lus carbon (C), silicon ( Si ), germanium ( Ge ), tin ( Sn ), coj ( Pb ), thiab flerovium (Fl).
- Atoms ntawm cov ntsiab lus nyob rau hauv pawg no muaj plaub valence electrons.
- Cov pa roj carbon tsev neeg tseem hu ua pawg carbon, pawg 14, lossis tetrels.
Yog li ntawd, pawg twg yog carbon nyob rau ntawm lub sij hawm?
Cov carbon pawg yog a pab pawg hnub nyoog suav nrog carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), thiab flerovium (Fl). Nws nyob hauv p-block. Nyob rau hauv niaj hnub IUPAC cim, nws yog hu ua Pab pawg 14. Nyob rau hauv lub teb ntawm semiconductor physics, nws tseem yog universally hu ua Pab pawg IV.
Ib yam li ntawd, cov khoom ntawm Pawg 14 yog dab tsi? Lub cev Cov khoom : Pawg 14 yam cov electropositive tsawg dua pab pawg 13 vim lawv qhov me me thiab siab ionization enthalpy. Hauv qab pab pawg , cov cim xim hlau nce. C thiab Si yog cov hlau tsis muaj hlau, Ge a metalloid, thiab Sn thiab Pb yog cov hlau mos uas muaj cov ntsiab lus melting tsawg.
Ib yam li ntawd, nws yog nug, dab tsi yog pawg carbon muaj nyob rau hauv?
Carbon yog tsis yog-hlau, silicon thiab germanium yog metalloids, thiab tin thiab lead yog hlau. Nrog 4 valence plhaub electrons, cov ntsiab lus ntawm cov tsev neeg carbon nyiam tsim covalent compounds. Nrog rau qhov loj thiab atomic radius cov ntsiab lus no ua rau hlau thiab muaj qis melting thiab boiling ntsiab lus.
Vim li cas cov pa roj carbon thiab txhuas nyob hauv tib pawg?
Tag nrho cov carbon pawg atoms, muaj plaub valence electrons, tsim covalent bonds nrog nonmetal atoms; carbon thiab silicon tsis tuaj yeem poob lossis nce electrons los tsim cov ions dawb, thaum germanium, tin, thiab coj ua cov hlau ions tab sis tsuas yog nrog ob qhov txiaj ntsig zoo.
Pom zoo:
Lub ntsiab lus ntawm lub hauv paus lo lus meter nyob rau hauv lo lus tus pas ntsuas kub yog dab tsi?
Lub hauv paus chiv keeb ntawm lo lus 'Thermometer' Qhov thib ob ntawm lo lus, 'meter', los ntawm Fabkis -mètre (uas muaj nws cov hauv paus hauv lub post-classical Latin: -meter, -metrumand lub ancient Greek, -Μέτρο ν, lossis metron, uas txhais tau tias ntsuas qee yam, xws li qhov ntev, qhov hnyav, lossis dav)
Dab tsi yog lub ntsiab lus ntawm kev hloov pauv lom neeg hauv cov ntsiab lus ntawm allele zaus?
Microevolution, los yog evolution ntawm ib tug me me, yog txhais raws li ib tug kev hloov nyob rau hauv lub zaus ntawm noob variants, alleles, nyob rau hauv ib tug pej xeem ntau tiam. Lub teb ntawm biology uas kawm txog allele frequencies nyob rau hauv cov pejxeem thiab yuav ua li cas lawv hloov lub sij hawm yog hu ua pej xeem noob caj noob ces
Vim li cas cov ntsiab lus thiab cov ntsiab lus yog cov tshuaj ntshiab?
Elements thiab compounds yog ob qho tib si piv txwv ntawm cov khoom ntshiab. Ib yam khoom uas tuaj yeem tawg mus rau hauv cov tshuaj lom neeg yooj yim dua (vim tias nws muaj ntau dua ib qho) yog ib qho khoom sib xyaw. Piv txwv li, dej yog acompound tsim los ntawm cov ntsiab lus hydrogen thiaboxygen
Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog
Qhov feem pua (%) ntawm cov pa roj carbon ntau hauv carbon monoxide CO) yog dab tsi?
Mass % C = (mass of 1 mol ofcarbon/mass of 1 mol of CO2) x 100.mass % C = (12.01 g / 44.01 g) x 100. mass % C = 27.29 %