Video: Pawg 18 lub npe yog dab tsi nyob rau hauv lub sij hawm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Pawg 18: Cov Noble Gases . Cov cov pa roj (Pab pawg 18) nyob rau sab xis ntawm lub rooj sib tham thiab yav tas los hu ua "inert gases" vim qhov tseeb tias lawv cov valence shells (octets) ua rau lawv tsis tshua muaj zog.
Raws li, Pawg 18 hu ua dab tsi?
Noble Gases [kho kom raug] Cov roj noble yog nyob rau hauv Pawg 18 (8A). Lawv muaj xws li neon, argon, krypton, xenon, thiab radon. Lawv ib zaug hu ua inert gases vim hais tias lawv tau xav tias ua tiav inert-tsis tuaj yeem rau formcompounds.
Tsis tas li ntawd, Pawg 17 lub npe yog dab tsi ntawm lub rooj sib tham? Cov halogens nyob rau sab laug ntawm lub noble gaseson lub daim ntawv qhia hnub . Cov tsib cov tshuaj lom, uas tsis yog-metallicelements ua Pawg 17 ntawm daim ntawv qhia hnub thiab muaj xws li: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), thiab astatine (At).
Tsis tas li ntawd, lub npe ntawm cov pab pawg nyob rau lub sij hawm lub rooj yog dab tsi?
Cov kab ntsug ntawm lub daim ntawv qhia hnub yog hu ua pawg los yog cov tsev neeg vim lawv cov kev coj cwj pwm zoo sib xws. Tag nrho cov tswv cuab ntawm tsev neeg ntawm cov ntsiab lus muaj tib tus lej ntawm valence electrons thiab cov khoom siv tshuaj zoo sib xws. Thehorizontal kab ntawm lub daim ntawv qhia hnub yog hu ua lub sij hawm.
Puas yog Pawg 18 nyob rau ntawm lub rooj sib tham ua haujlwm?
Noble gases muaj nyob rau hauv pab 18 ntawm daim ntawv qhia hnub . Cov ntsiab lus no muaj tus lej oxidation ntawm 0. Tag nrho cov noble gases muaj 8 electrons nyob rau hauv lawv lub plhaub sab nrauv, ua rau lawv ruaj khov thiab tsis heev. reactive.
Pom zoo:
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