Dab tsi yog hlau ntawm lub rooj zaum?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Hlau tus cwj pwm yog lub npe muab rau cov txheej txheem tshuaj lom neeg nrog cov ntsiab lus uas yog hlau. Cov khoom siv tshuaj lom neeg no tshwm sim los ntawm qhov yooj yim hlau plam lawv cov electrons los ua cations (positively charged ions). Cov hlau feem ntau yog malleable thiab ductile thiab tuaj yeem deformed yam tsis muaj kev tawg.

Tsis tas li ntawd, dab tsi yog cov cim xim hlau nyob rau hauv ib lub sij hawm?

Cov xim hlau cim ntawm ib keeb tuaj yeem txhais tau tias yooj yim npaum li cas lub atom tuaj yeem poob ib qho hluav taws xob. Los ntawm sab xis mus rau sab laug hla ib lub sijhawm, xim hlau cim nce vim qhov attraction ntawm valence electron thiab lub nucleus tsis muaj zog, ua kom yooj yim dua ntawm electrons.

Kuj Paub, cov ntsiab lus dab tsi yog hlau? Ze li 75% ntawm tag nrho cov cov ntsiab lus nyob rau hauv Lub Sij Hawm Lub Sij Hawm yog cais raws li cov hlau. Piv txwv ntawm cov hlau yog kub, aluminium, tooj liab, hlau, txhuas, nyiaj, platinum, uranium thiab zinc. Nyob rau hauv Lub Sij Hawm Lub Sij Hawm Cov Hlau tau muab cais rau hauv cov pab pawg kom ntxaws hauv cov npe hauv qab no: Alkali Metals.

Yog li ntawd, dab tsi lub ntsiab yog metallic?

Qhov feem ntau yog xim hlau francium . Txawm li cas los xij, francium yog ib qho khoom tsim los ntawm tib neeg, tshwj tsis yog rau ib qho isotope, thiab tag nrho isotopes yog li cov xov tooj cua lawv yuav luag tam sim ntawd lwj mus rau lwm lub caij. Lub ntuj tsim nrog lub siab tshaj plaws metallic tus cwj pwm yog cesium , uas pom ncaj qha saum toj no francium nyob rau ntawm lub rooj sib tham.

Cov ntawv cog lus hlau nyob qhov twg ntawm lub rooj zaum?

A metallic sib txuas txoj kev xav yuav tsum piav qhia ntau npaum li cas kev sib raug zoo tuaj yeem tshwm sim nrog ob peb lub electrons (vim cov hlau nyob rau sab laug ntawm lub daim ntawv qhia hnub thiab tsis muaj ntau electrons nyob rau hauv lawv cov valence plhaub).