Video: Valency ntawm francium yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nyob rau hauv lub periodic table ntawm cov ntsiab lus, francium islocated nyob rau hauv qab sab laug ces kaum ntawm lub rooj. Nws yog nyob rau hauv thawj kab, los yog pab pawg, thiab qhov ntawd sawv cev muaj pes tsawg valence electrons nws muaj. Valence electrons yog cov hluav taws xob nyob rau sab nraud feem ntau lub zog ntawm lub atom. Rau francium , nws tsuas muaj ib qho valenceelectron xwb.
Ib yam li ntawd, koj tuaj yeem nug, dab tsi yog qhov valence ntawm selenium?
Selenium tshwj xeeb muaj ib qho electronconfiguration ntawm 2-8-18-6. Lub rau lub electrons nyob rau hauv lub outermost shellallow selenium kom muaj ntau yam valence tus lej. Selenium Cov tebchaw tau pom tias muaj valences ntawm -2, 4, thiab 6. Hais txog tus lej rau, selenium pom tias muaj rau qhov tshwm sim ntawm cov isotopes.
Tsis tas li ntawd, vim li cas francium tsawg heev? Qhov no yog vim qhov kev ncua deb ntawm nws cov electrons los ntawm lub nucleus thiab nws tus lej atomic. Dab tsi ntxiv, francium yog therarest lub caij uas tshwm sim hauv qhov tab sis ib qho. Feem ntau tsis tshua muaj Qhov tshwm sim ib qho yog astatin. Cov khoom no yog qhov tsis tshua muaj hluav taws xob thiab tawg mus rau hauv radon, radium, andastatine.
Ib sab saum toj no, tus nqi francium ntau npaum li cas?
Tsuas yog ob peb atoms ntawm francium tau tsim ua lag luam, yog li yog tias koj xav tsim 100 grams ntawm francium , koj tuaj yeem cia siab tias yuav them ob peb billion US dollars rau nws. Lutetium yog cov khoom kim tshaj plaws uas koj tuaj yeem xaj thiab yuav khoom. Cov nqe rau 100 grams oflutetium yog nyob ib ncig ntawm $10,000.
Puas yog francium yog nonmetal?
Francium . Francium yog ib tug tshuaj elementwith lub cim Fr thiab atomic tooj 87. Cov isotopes ntawm francium Kev lwj sai sai rau hauv astatine, radium, thiab radon. Theelectronic qauv ntawm a francium atom yog [Rn]7s1, thiab yog li lub caij yog classed li alkalimetal.
Pom zoo:
Dab tsi yog Valency ntawm alkali hlau?
Alkaline ntiaj teb hlau yog nyob rau pawg thib 2 ntawm cov lus niaj hnub niaj hnub. Lawv muaj 2 electrons nyob rau hauv lawv lub plhaub sab nraud. Raws li nws yooj yim rau lawv poob 2 electrons dua li nce 6 ntau electrons kom ua tiav octet, lawv poob electrons thiab tau txais tus nqi ntawm +2
Dab tsi yog cov hlau nplaum uas ua los ntawm qhov kev npaj ntawm electrons yog dab tsi?
Electrons yog teem rau hauv plhaub thiab orbitals nyob rau hauv ib tug atom. Yog hais tias lawv sau lub orbitals kom muaj ntau spin taw tes rau hauv qab (los yog vice versa), txhua atom yuav ua zoo li ib tug me me hlau nplaum. Thaum ib daim ntawm cov hlau tsis muaj hlau nplaum (lossis lwm yam khoom siv ferromagnetic) raug rau sab nraud magnetic teb, ob yam tshwm sim
Qhov Valency ntawm carbon thiab oxygen yog dab tsi?
Raws li nyob rau hauv cov pa roj carbon dioxide molecule ob qho tib si carbon thiab oxygen tau ua tiav lawv octet bysharing electrons. #Ib leeg carbon muaj 4 valency thiab oxygen muaj 2. Nws yog + ntxiv 4. Raws li nws yog bounded los ntawm 2oxygen atoms uas muaj -2 nqi ntawm txhua
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua
Dab tsi yog qhov Valency ntawm zinc chloride?
Zinc chloride muaj zinc thiab chlorine.Yog li Zn muaj tus lej atomic 30 yog li nws cov khoom siv hluav taws xob yuav yog 2,8,18,2. Qhov no txhais tau tias nws muaj 2 valenceelectrons