Video: Vim li cas cov ntsiab lus hauv tib pab pawg muaj nqi tib yam?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Feem ntau, cov ntsiab lus uas belongs rau tib pawg (ntsug kem) ntawm lub sij hawm lub rooj daim ntawv ions nrog rau tib nqi vim lawv muaj ib yam tus naj npawb ntawm valence electrons.
Ua raws li qhov no, vim li cas cov ntsiab lus hauv tib pab pawg?
1 Teb. Cov cov ntsiab lus hauv tib pab pawg muaj cov lej zoo sib xws ntawm valence electrons. Lawv muaj tus lej ntawm cov electrons zoo tib yam hauv lawv lub plhaub sab nraud. e.g. Tag nrho cov alkali hlau nyob rau hauv Pab pawg 1 muaj 1 valence electron, yog li lawv txhua tus zoo li hnov mob ib yam txoj kev nrog lwm yam khoom.
Qhov thib ob, cov ntsiab lus hauv tib lub sijhawm puas muaj ntau dua lossis tsawg dua li cov ntsiab lus hauv tib pawg? Cov ntsiab lus hauv tib pab pawg yog cov uas nyob hauv ib kab ntsug ntawm sab saum toj mus rau hauv qab. Lawv muaj ntau tshaj hauv feem ntau nruab nrab ntawm ob txoj kev. Lawv sib koom ib yam Tus naj npawb ntawm cov electrons hauv lawv cov valence subshells. Cov ntsiab lus nyob rau tib lub sijhawm yog cov uas nyob hauv ib kab kab rov tav los ntawm sab laug mus rau sab xis.
Ntxiv rau qhov no, vim li cas cov atoms hauv tib pab pawg muaj cov khoom qub?
Electron kev npaj thiab khoom ntawm cov ntsiab lus Yog li ntawd, cov ntsiab lus hauv tib pab pawg muaj zoo ib yam tshuaj khoom vim lawv muaj ib yam tus naj npawb ntawm cov electrons hauv lawv lub plhaub sab nraud. Cov atoms ntawm tag nrho pab pawg 1 cov ntsiab lus muaj zoo ib yam tshuaj khoom thiab cov tshuaj tiv thaiv vim lawv txhua tus muaj ib tug electron nyob rau hauv lawv lub plhaub sab nrauv.
Vim li cas cov ntsiab lus ntawm tib pab pawg muaj cov tshuaj zoo sib xws?
Cov ntsiab lus hauv tib pawg (nyob rau hauv lub periodic table) muaj cov tshuaj zoo sib xws . Qhov no yog vim lawv cov atoms muaj tus ib yam tus naj npawb ntawm electrons nyob rau hauv lub siab tshaj plaws nyob qib zog. Pab pawg 1 cov ntsiab lus yog cov hlau reactive hu ua alkali hlau. Pab pawg 0 cov ntsiab lus yog unreactive non-metals hu ua noble gases.
Pom zoo:
Cov pab pawg twg ntawm cov ntsiab lus tsuas muaj tsis yog hlau?
Kev piav qhia: Pawg VIIA yog tib pawg hauv lub sijhawm uas txhua lub ntsiab lus yog nonmetals. Cov pab pawg no muaj F, Cl, Br, I thiab At.Lwm lub npe ntawm pab pawg no yog halogen uas txhais tau tias cov khoom siv ntsev
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
Vim li cas cov ntsiab lus hauv Pab Pawg 1 yog qhov cuam tshuam tshaj plaws?
Qhov feem ntau reactive nyob rau hauv pab pawg neeg 1 yog caseium vim hais tias thaum peb los ntawm sab saum toj mus rau hauv qab, qhov luaj li cas ntawm atom yog nce nyob rau hauv lub parallel nrog cov xov tooj ntawm electron, yog li lub zog tuav lub electron txo, thiab peb paub tias tag nrho cov alkali hlau muaj. ib qho hluav taws xob nyob rau hauv lub plhaub feem ntau yog li nws tuaj yeem yooj yim tshem tawm qhov ntawd
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