Video: Vim li cas lawv thiaj hu ua pab pawg tseem ceeb?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pawg ntsiab lus yog nyob deb ntawm ntau tshaj cov ntsiab lus - tsis tsuas yog nyob rau hauv lub ntiaj teb, tab sis nyob rau hauv tag nrho cov ntug. Vim li no, lawv yog qee zaum hu ua tus 'tus neeg sawv cev cov ntsiab lus . 'Qhov pawg ntsiab lus muaj nyob rau hauv s- thiab p-blocks, txhais tau hais tias lawv cov kev teeb tsa hluav taws xob yuav xaus rau hauv s lossis p.
Dhau li ntawm no, dab tsi pab pawg tseem ceeb txhais tau li cas?
Hauv chemistry thiab atomic physics, pawg ntsiab lus yog cov ntsiab lus hauv pab pawg Nws cov tswvcuab lub teeb tshaj plaws yog sawv cev los ntawm helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, thiab fluorine raws li tau teev tseg hauv lub sijhawm ntawm lub sijhawm. cov ntsiab lus.
Tsis tas li ntawd, CS puas yog ib pab pawg tseem ceeb? Cov yam ntxwv tshuaj. Feem ntau, feem ntau pawg ntsiab lus siv los ua carbonates yog cov Alkali thiab Alkaline hlau. Tag nrho pawg loj carbonates, tshwj tsis yog Na, K, Rb thiab Cs tsis ruaj tsis khov rau cua sov thiab insoluble hauv dej.
Yog li ntawd, vim li cas Pawg A cov ntsiab lus hu ua tus sawv cev?
Cov ntsiab lus hauv pab pawg 1A txog 7A feem ntau hu ua cov khoom sawv cev vim lawv pom ntau yam ntawm lub cev thiab tshuaj lom neeg. Lub s thiab p sublevels ntawm lub siab tshaj plaws nyob rau hauv lub zog theem tsis puv. Cov pab pawg tooj sib npaug ntawm cov electrons nyob rau hauv lub siab tshaj plaws nyob qib zog.
Cov pab pawg hu ua dab tsi?
Cov ntsiab lus yog teem los ntawm reactivity nyob rau hauv lub periodic rooj. Cov cov ntsiab lus hauv pab pawg IA yog hu ua cov alkali hlau. Cov cov ntsiab lus hauv pab pawg IIA yog hu ua cov alkaline ntiaj teb hlau. Cov cov ntsiab lus hauv pab pawg VIIA yog hu ua halogens thiab cov ntsiab lus hauv pab pawg VIIIA yog hu ua cov noble gases los yog inert gases.
Pom zoo:
Vim li cas cov pab pawg carbonyl tseem ceeb?
Lawv tuaj yeem pom hauv ntau pawg ua haujlwm sib txawv, xws li aldehydes, ketones, esters, thiab ntau ntxiv. Ib pawg carbonyl tuaj yeem ua rau kom lub melting lossis boiling point ntawm lub compound. Nws tau piav raws li polar thiab reactive, thiab cov nqi tsis zoo thiab zoo ntawm carbonyl pab txhawb rau polarity
Vim li cas qhov tseem ceeb ntawm qhov tseem ceeb?
Thaum koj pom tus nqi kiag li hauv qhov teeb meem lossis qhov sib npaug, nws txhais tau hais tias txhua yam nyob hauv tus nqi tiag tiag yog qhov zoo. Cov txiaj ntsig tsis zoo feem ntau siv rau hauv cov teeb meem cuam tshuam nrog kev nyob deb thiab qee zaum siv nrog qhov tsis sib xws. Qhov ntawd yog qhov tseem ceeb uas yuav tsum nco ntsoov nws zoo li qhov deb ntawm xoom
Vim li cas cov nuj nqis tseem ceeb tseem ceeb thaum qhia txog kev ntsuas?
Cov duab tseem ceeb yog qhov tseem ceeb los qhia qhov tseeb ntawm koj cov lus teb. Qhov no yog qhov tseem ceeb hauv kev tshawb fawb thiab engineering vim tias tsis muaj cov cuab yeej ntsuas tuaj yeem ua qhov ntsuas nrog 100% precision. Siv cov nuj nqis tseem ceeb tso cai rau tus kws tshawb fawb paub tias cov lus teb meej npaum li cas, lossis qhov tsis paub meej npaum li cas
Dab tsi feem ntau yog pab pawg ua haujlwm thiab vim li cas cov pab pawg no tseem ceeb?
Cov pab pawg ua haujlwm tau txuas mus rau carbonbackbone ntawm cov organic molecules. Lawv txiav txim siab tus yam ntxwv thiab tshuaj lom neeg reactivity ntawm molecules. Cov pab pawg ua haujlwm tsis tshua muaj kev ruaj ntseg dua li cov pa roj carbon monoxide thiab zoo li yuav koom nrog cov tshuaj tiv thaiv
Avery thiab nws pab pawg tau txiav txim siab li cas molecule tseem ceeb tshaj plaws rau kev hloov pauv?
Qhia luv luv hais tias Avery thiab nws pab pawg tau txiav txim siab tias qhov twg yog qhov tseem ceeb tshaj plaws rau kev hloov pauv. Avery thiab nws pab pawg tau siv ob lub enzymes sib txawv ntawm cov kab mob tua hluav taws kub. Ib qho rhuav tshem DNA, lwm qhov rhuav tshem txhua yam tab sis. Lawv pom tias kev hloov pauv tseem tshwm sim thaum DNA nyob