Tus pub atom yog lub atom nyob rau hauv lub ligand uas txuas rau Lewis acid centre. Tus naj npawb ntawm kev sib koom tes yog tus naj npawb ntawm cov neeg pub dawb atom hauv kev sib koom ua ke. Lub denticity ntawm ib lub ligand yog tus naj npawb ntawm daim ntawv cog lus uas nws tsim nrog Lewis acid centre.
koj txhais li cas los ntawm pub atom?
Ib qho tsis huv atom hauv ib lub semiconductor uas tuaj yeem pab lossis pub ib lossis ntau dua cov khoom siv hluav taws xob raucov siv lead ua los ntawm kev ua ionized thiab zoo them.
Atoms pub dawb thiab txais dab tsi?
Kaum Ob Hlis 14, 2019 los ntawm Nick Connor. Ib qho khoom siv hluav taws xob yog ib qho dopant atom (impurity) uas, thaum ntxiv rau ib qho khoom siv hluav taws xob, tuaj yeem tsim ib hom n-hom semiconductor. Ib qho electron txais yogib qho dopant atom (impurity) uas, thaum ntxiv rau ib qho khoom siv hluav taws xob, tuaj yeem tsim p-hom semiconductor.
tus pub atom thiab piv txwv yog dab tsi?
Piv txwv li, ib qho atom ntawm kab V ntawm lub sij hawm lub sij hawm, xws li phosphorus, arsenic, los yog antimony, hloov rau ib txwm atom ntawm germanium los yog silicon crystalyog pub vim nws muaj ib los yog ntau tshaj valence electrons uas yuav tsum tau detached thiab ntxiv mus rau lub conduction band ntawm siv lead ua (saib daim duab).
Atom pub dawb muaj dab tsi?
Tus pub impurity atom muaj tag nrho ntawm 5 electrons hauv nws lub plhaub valence. Thaum lees txais impurity atom muaj 3 electrons hauv nws lub plhaub valence. Pawg V cov ntsiab lus ntawm lub rooj sib tham yog suav tias yog pub dawb tsis huv vim muaj cov khoom siv hluav taws xob ntxiv.
