Video: Cov calcium nyob hauv tsev neeg twg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Leej twg nyob hauv tsev neeg ? Cov tswv cuab ntawm alkalineearth hlau muaj xws li: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) thiab radium (Ra). tsev neeg , cov ntsiab lus no qhia qhov zoo. Thaum notas reactive li alkali hlau, qhov no tsev neeg paub yuav ua li cas tomake bonds yooj yim heev.
Ib yam li ntawd, nws tau nug, tsev neeg twg yog calcium nyob rau ntawm lub sijhawm?
Calcium yog cais tshuaj raws li ib qho ntawm lub ntiaj teb thealkaline (uas yog, nyob rau hauv pab pawg 2 ntawm cov periodictable . Cov hlau yog rhiab heev.
Qhov thib ob, calcium nyob qhov twg hauv ib puag ncig? Nws tshwm sim nyob rau hauv ntau lub tebchaw thiab nyob rau hauv cov ntaub ntawv no nws ua 3.64 feem pua ntawm tag nrho cov igneous pob zeb, ua rau nws yog thib tsib feem ntau muaj nyob rau hauv lub ntiaj teb crust. Ntawm cov hlau, calcium yog qhov thib peb tshaj plaws thiab yog pom nyob rau hauv txhua cheeb tsam ntawm lub ntiaj teb. Calcium muaj atomic tooj 20, thiab atomic hnyav 40.08.
Ib yam li ntawd, tib neeg nug, dab tsi yog calcium siv hauv?
Calcium hlau yog siv li ib tug txo tus neeg sawv cev npaj lwm yam hlau xws li thorium thiab uranium. Nws kuj yog siv li tus neeg sawv cev alloying rau aluminium, beryllium, tooj liab, txhuas thiab magnesium alloys.
Pawg 7 hu ua dab tsi?
Cov Pawg 7 cov ntsiab lus yog hu ua cov halogens. Lawv muab tso rau hauv kab ntsug, thib ob los ntawm sab xis, nyob rau hauv lub rooj zaum. Chlorine, bromine thiab iodine yog peb yam Pawg 7 cov ntsiab lus. Pawg 7 cov ntsiab lus formsalts thaum lawv hnov mob nrog hlau.
Pom zoo:
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