Cov ntsiab lus hauv pawg 15, 16 thiab 17, pom tias nws yooj yim dua kom tau txais hluav taws xob ntau dua li poob lawv. Piv txwv li, oxygen atoms tau txais ob lub electrons los ua O 2- ions. Cov no muaj tib lub teeb tsa hluav taws xob zoo li cov roj neon noble. Cov ntsiab lus hauv Pawg 14 tuaj yeem poob plaub, lossis nce plaub lub tshuab hluav taws xob kom ua tiav cov qauv roj zoo.
Puas oxygen nce electrons?
Ib qho hluav taws xob-nruab nrab oxygen atom nce ob lub electrons los tsim cov pa oxygen nrog ob qhov tsis zoo. Daim ntawv ceeb toom yuav ua li cas tus nqi txuag hauv cov txheej txheem no. Qhov kev npaj tshwj xeeb no ua kom muaj ob lub zog tseem ceeb thaum tawm hauv qhov seem seem. Yog li ntawd, O2- ion yuav tsum muaj tshuaj lom neeg ruaj khov.
Puas muaj pes tsawg electrons puas oxygen nce lossis poob?
Ib yam li ntawd, thaum oxygen, O, nce 2 electrons cov anion yog O2–. Lub 2 sawv cev rau 2 tau txais electrons thiab qhov - yog rau qhov tsis zoo xwb cov pa oxygen tau txais.
Puas muaj pes tsawg electrons puas oxygen nce?
Lub ob tau txais electrons (ntsuab dots) txhais tau hais tias cov pa ion no muaj 10 electrons (-10 nqi) thiab tsuas yog 8 protons (+8 nqi), muab cov ion ib net nqi -2. Symbolically, peb tuaj yeem sawv cev rau cov pa oxygen no li O-2.
Vim li cas oxygen thiaj nce ob lub electrons?
Oxygen yog nyob rau hauv pab pawg rau hauv lub sijhawm lub sijhawm yog li nws muaj rau lub tshuab hluav taws xob hauv nws lub plhaub valence. Qhov no txhais tau tias nws yuav tsum tau nceob lub electrons ua raws li txoj cai octet thiab muaj tag nrho cov txheej txheem ntawm electrons (yim). Vim electrons muaj nqi ntawm 1-, ntxiv ob lub electrons yuav ua rau tus nqi ntawm oxide ion 2-.
