Qhov txawv ntawm Barium thiab Strontium yog dab tsi?

Qhov sib txawv tseem ceeb ntawm barium thiab strontium yog cov hlau barium yog tshuaj lom neeg ntau dua li cov hlau strontium.

Barium yog dab tsi?

Barium yog cov khoom siv tshuaj muaj lub cim Ba thiab atomic tooj 56. Nws zoo nkaus li cov hlau silvery-grey nrog cov xim daj daj.Thaum oxidation nyob rau hauv huab cua, lub silvery-dawb tsos dheev ploj mus muab ib tug tsaus grey txheej uas muaj cov oxide.Cov tshuaj no muaj nyob rau hauv lub sij hawm nyob rau hauv pawg 2 thiab lub sij hawm 6 nyob rau hauv alkaline ntiaj teb hlau.Nws yog ib qho s-block keeb nrog lub teeb tsa hluav taws xob [Xe]6s2.Nws yog ib qho khoom ntawm tus qauv kub thiab siab.Nws muaj qhov siab melting point (1000 K) thiab kub kub point (2118 K).Qhov ceev yog siab heev (li 3.5 g / cm3).

Barium thiab strontium yog ob tug tswv cuab ntawm pawg alkaline ntiaj teb hlau (pab pawg 2) ntawm lub sij hawm.Qhov no yog vim cov hlau atoms muaj ns2 electron configuration.Txawm hais tias lawv nyob hauv tib pab pawg, lawv nyob rau lub sijhawm sib txawv, uas ua rau lawv txawv me ntsis ntawm ib leeg hauv lawv cov khoom.

Lub ntuj tshwm sim ntawm barium tuaj yeem piav qhia tias yog thawj zaug, thiab nws muaj lub cev-centered cubic crystal qauv.Tsis tas li ntawd, barium yog cov tshuaj paramagnetic.Qhov tseem ceeb tshaj, barium muaj qhov hnyav nruab nrab thiab muaj hluav taws xob siab.Qhov no yog vim hais tias cov hlau no nyuaj rau purify, uas ua rau nws nyuaj rau xam tawm feem ntau ntawm nws cov khoom.Thaum xav txog nws cov tshuaj reactivity, barium muaj ib tug reactivity zoo li magnesium, calcium, thiab strontium.Txawm li cas los xij, barium reactive ntau dua li cov hlau no.Lub cev oxidation ntawm barium yog +2.Tsis ntev los no, kev tshawb fawb kev tshawb fawb tau pom ib daim ntawv +1 barium ib yam nkaus.Barium tuaj yeem hnov ​​​​mob nrog chalcogens nyob rau hauv daim ntawv ntawm exothermic tshua, tso lub zog.Yog li ntawd, hlau barium yog khaws cia nyob rau hauv cov roj los yog nyob rau hauv ib tug inert cua.

Strontium yog dab tsi?

Strontium yog cov khoom siv tshuaj muaj lub cim Sr thiab atomic tooj 38. Nws yog alkaline ntiaj teb hlau nyob rau hauv pawg 2 thiab lub sij hawm 5 ntawm lub sij hawm.Nws yog ib qho khoom ntawm tus qauv kub thiab siab.Lub melting point ntawm strontium yog siab (1050 K), thiab lub boiling point kuj yog siab (1650 K).Nws qhov ceev yog siab thiab.Nws yog ib qho s thaiv lub caij nrog lub teeb tsa hluav taws xob [Kr]5s2.

Strontium tuaj yeem piav qhia tias yog cov hlau divalent silvery uas muaj xim daj daj.Cov khoom ntawm cov hlau no yog nruab nrab ntawm cov tshuaj nyob sib ze ntawm calcium thiab barium.Cov hlau no yog softer dua calcium thiab harder tshaj barium.Ib yam li ntawd, qhov ceev ntawm strontium yog nyob nruab nrab ntawm calcium thiab barium.Muaj peb lub allotropes ntawm strontium ib yam nkaus.Strontium qhia tau hais tias muaj zog reactivity nrog dej thiab oxygen.Yog li ntawd, nws ib txwm tshwm sim tsuas yog nyob rau hauv cov tebchaw nrog rau lwm yam xws li strontianite thiab celestine.Ntxiv mus, peb yuav tsum khaws cia rau hauv cov kua hydrocarbons xws li cov ntxhia roj los yog kerosene kom tsis txhob oxidation.Txawm li cas los xij, cov hlau strontium tshiab sai sai hloov mus rau hauv cov xim daj thaum raug huab cua vim yog tsim cov oxide.

Qhov txawv ntawm Barium thiab Strontium yog dab tsi?

Barium thiab strontium yog ib qho tseem ceeb alkaline ntiaj teb hlau nyob rau hauv pawg 2 ntawm lub sij hawm.Qhov sib txawv tseem ceeb ntawm barium thiab strontium yog cov hlau barium yog tshuaj lom neeg ntau dua li cov hlau strontium.Ntxiv mus, barium yog sib piv softer dua strontium.