Qhov Tseem Ceeb Qhov txawv - Valency vs Valence Electrons
Valency electrons thiab valence electrons yog cov ntsiab lus sib cuam tshuam, thiab qhov sib txawv tseem ceeb ntawm valency thiab valence electrons tau piav qhia zoo tshaj hauv lawv cov ntsiab lus; valence electrons yog cov electrons nyob rau hauv lub plhaub sab nraud ntawm ib lub caij thaum valency electrons yog tus naj npawb ntawm cov electrons uas yuav tsum tau txais los yog tshem tawm kom ncav cuag qhov ze tshaj plaws noble gas configuration. Nws yog cov khoom siv hluav taws xob hauv lub plhaub sab nraud uas feem ntau ua rau cov khoom siv tshuaj lom neeg. Hauv qee cov atoms, tus naj npawb ntawm valence electrons yog sib npaug rau cov valency electrons.
Valence Electrons yog dab tsi?
Tus naj npawb ntawm electrons nyob rau hauv lub plhaub sab nraud ntawm lub atom hu ua "valence electrons". Vim li no, lub plhaub sab nraud ntawm lub atom hu ua "valence plhaub". Feem ntau, cov no yog cov khoom siv hluav taws xob, uas koom nrog kev sib raug zoo tshuaj. Thaum cov khoom tsim cations, lawv tshem tawm cov electrons los ntawm lub plhaub valence. Tus naj npawb ntawm valence electrons nyob rau hauv ib lub caij txiav txim cov pab pawg nyob rau hauv lub periodic table.
Valency Electrons yog dab tsi?
Tus naj npawb ntawm cov hluav taws xob yuav tsum tau nce lossis poob los sau lub plhaub sab nraud ntawm lub atom hu ua "valency electrons". Rau ib qho atom tshwj xeeb, tus naj npawb ntawm valency electrons nyob ntawm tus naj npawb ntawm valence electron hauv lub atom. Rau Sodium, valency yog sib npaug rau 1, vim tias nws tshem tawm cov hluav taws xob kawg hauv lub plhaub sab nraud kom ua tiav cov qauv octet ntawm cov pa roj uas ze tshaj plaws.
|
Qhov txawv ntawm Valency thiab Valence Electrons yog dab tsi?
Definition of Valency thiab Valence Electrons
Valence Electrons: Cov hluav taws xob nyob hauv lub plhaub sab nraud ntawm lub atom hu ua "valence electrons". Rau "s" thiab "p" pawg, tus naj npawb ntawm valence electrons yog sib npaug rau lawv cov pab pawg neeg.
Example
Valency Electrons: Tus naj npawb ntawm cov hluav taws xob uas yuav tsum tau txais lossis tshem tawm kom tau txais cov khoom siv hluav taws xob ntawm cov pa hluav taws xob ze tshaj plaws yog hu ua "valency electrons" lossis "valence" ntawm atom.
Feem ntau, rau cov khoom hlau (cov ntsiab lus hauv pawg I, II thiab III), tus naj npawb ntawm cov hluav taws xob valence yog sib npaug rau cov khoom siv hluav taws xob; Lawv tshem tawm cov electrons hauv lub plhaub valence kom ua tiav cov qauv octet.
Tab sis, cov khoom tsis yog hlau txais cov khoom siv hluav taws xob kom ua tiav cov khoom siv hluav taws xob ntawm cov pa roj uas ze tshaj plaws. Yog li ntawd, qhov tseem ceeb ntawm cov khoom tsis yog hlau yog xam los ntawm kev rho tawm tag nrho cov valence electrons los ntawm 8.
Rau Chlorine, Tus naj npawb ntawm cov khoom siv hluav taws xob=8-7=1
yam ntxwv ntawm Valency thiab Valence Electrons
Valency thiab Valence Electrons ntawm pawg VIII ntsiab
Valence Electrons: Pawg VIII cov ntsiab lus yog cov roj zoo, thiab lawv muaj tshuaj lom neeg ruaj khov. Lawv lub plhaub sab nrauv tiav, thiab nws muaj yim lub tshuab hluav taws xob nyob rau hauv lub plhaub sab nraud (tshwj tsis yog Helium -He); yog li ntawd pawg VIII electrons muaj yim valence electrons.
Valency Electrons: Valency yog qhov ntsuas ntawm lub peev xwm los tsim cov ntawv cog lus nrog lwm cov khoom lossis cov molecules. Noble gases tsis lees txais lossis tshem tawm cov electrons kom ua tiav txoj cai octet txij li thaum lawv tau ua tiav lub plhaub kawg. Yog li ntawd, qhov valency ntawm pawg VII ntsiab sib npaug rau xoom.
