Hom kev sib txuas dab tsi muaj nyob hauv sodium bromide crystals?
Hom kev sib txuas dab tsi muaj nyob hauv sodium bromide crystals?

Video: Hom kev sib txuas dab tsi muaj nyob hauv sodium bromide crystals?

Video: Hom kev sib txuas dab tsi muaj nyob hauv sodium bromide crystals?
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ionic daim ntawv cog lus muaj nyob rau hauv sodium bromide crystals. Sodium bromide crystals yog soluble nyob rau hauv dej vim hais tias ntawm lawv sib xws polar yam ntxwv.

Ua li no, daim ntawv cog lus twg muaj nyob hauv sodium bromide?

Ib qho ionic daim ntawv cog lus yog thaum electrons pauv ntawm cov atoms, muab nws tus nqi (zoo lossis tsis zoo). Yog li, peb tuaj yeem sau tawm qhov sib xyaw: NaBr, uas yog sodium bromine , thiab yog ionic daim ntawv cog lus.

Ib yam li ntawd, dab tsi ntawm daim ntawv cog lus tsim muaju? Cov crystals tsim los ntawm kev sib txuas ntawm atoms yog ib qho ntawm peb pawg, cais los ntawm lawv cov kev sib txuas: ionic , covalent , thiab metallic. Molecules kuj tuaj yeem sib txuas ua ke los ua cov muaju; cov ntawv cog lus no, tsis tau tham txog ntawm no, tau muab cais ua molecular.

Yog li ntawd, dab tsi compound yuav tsim ntawm sodium thiab bromine?

NaBr yog tsim los ntawm kev kho sodium hydroxide nrog hydrogen bromide . Sodium bromide tuaj yeem siv los ua cov khoom siv tshuaj lom neeg bromine. Qhov no tuaj yeem ua tiav los ntawm kev kho cov tshuaj aqueous ntawm NaBr nrog chlorine gas : 2 NaBr + Cl2 → Br2 + 2 NaCl.

Puas yog NaBr yog ib daim ntawv cog lus covalent?

Xws li daim ntawv cog lus hais txog kev sib koom tsis sib xws ntawm kev sib txuas ntawm electrons ntawm ob lub atoms. Raws li kuv tau hais, HF raug suav hais tias yog polar covalent vim nws muaj ob lub nonmetals sib txuas rau ib leeg. Txawm li cas los xij, sodium bromide, lossis NaBr , muaj qhov sib txawv ntawm electronegativity tab sis suav tias yog ionic.

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