Qhov sib txawv tseem ceeb ntawm N2 thiab 2N yog N2 yog molecular nitrogen lossis nitrogen gas, qhov 2N tsuas yog hais txog ob lub atoms ntawm nitrogen.
Nitrogen yog cov khoom siv tshuaj, thiab peb tuaj yeem pom nws hauv pawg 15 thiab lub sijhawm 2 ntawm lub sijhawm ntawm cov tshuaj lom neeg. Nws tshwm sim nyob rau hauv cov xwm li nitrogen gas.
N2 yog dab tsi?
N2 yog molecular nitrogen lossis nitrogen gas. Nws yog ib qho diatomic molecule uas muaj zog heev triple daim ntawv cog lus nyob rau hauv elemental nitrogen. Nws yog qhov thib ob muaj zog tshaj daim ntawv cog lus nyob rau hauv ib qho diatomic molecule, thib ob tsuas yog rau daim ntawv cog lus hauv carbon monoxide. Yog li ntawd, nws yog qhov nyuaj heev los hloov N2 rau hauv cov khoom siv nitrogenous rau ob qho tib si kab mob thiab kev lag luam. Nyob rau tib lub sijhawm, hlawv, tawg lossis decomposition ntawm daim ntawv cog lus triple hauv cov nitrogen molecule tso tawm ntau lub zog muaj txiaj ntsig.
Feem ntau, cov roj nitrogen tsis muaj xim, tsis muaj ntxhiab thiab tsis qab. Nws yog diamagnetic roj thiab tuaj yeem yaj ntawm qhov kub thiab txias (txog -210 degrees Celsius). N2 molecule yog unreactive nyob rau hauv chav tsev kub, tab sis nws muaj peev xwm hnov mob nrog lithium hlau thiab lwm yam kev hloov pauv hlau complexes. Tsis tas li ntawd, N2 tuaj yeem ua kua qaub ntawm qhov kub ntawm 77 K thiab tuaj yeem khov ntawm 63 K. Qhov khov no ua rau hexagonal-kaw ntim cov khoom siv lead ua allotropic.
2N yog dab tsi?
2N tsuas yog hais txog ob lub atom ntawm nitrogen. Thaum ob lub atoms ntawm nitrogen ua ke nrog ib leeg, nws ua rau ib tug diatomic nitrogen molecule, uas yog ib txwm tshwm sim ntawm nitrogen gas. Ib lub atom ntawm nitrogen muaj xya electrons nyob rau hauv lub electronic configuration 1s22s22p3 Yog li ntawd, muaj yog tsib valence electrons hauv ib atom ntawm nitrogen (hauv 2s thiab 2p orbitals). Ntawm tsib lub valence electrons no, peb yog unpaired thiab lwm ob yog ua ke nrog ib leeg.
Ntxiv mus, lub atom nitrogen muaj ib qho ntawm cov khoom siv hluav taws xob siab tshaj plaws ntawm cov khoom siv tshuaj (tus nqi tsuas yog dhau los ntawm cov txiaj ntsig electronegativity ntawm chlorine, oxygen thiab fluorine). Vim qhov no daim duab siab, nitrogen feem ntau tsis muaj cationic chemistry. Feem ntau, nitrogen atoms zoo ib yam li oxygen atoms vim lawv cov electronegativity siab thiab muaj peev xwm ua ke rau hydrogen bonding. Tsis tas li ntawd, nws muaj peev xwm los tsim kev sib koom ua ke zoo ib yam li cov pa oxygen los ntawm kev pub dawb ib leeg ntawm electrons.
Tsis tas li ntawd, lo lus 2N tuaj yeem xa mus rau ib qho isotope ruaj khov ntawm nitrogen vim tias muaj ob lub isotopes ruaj khov ntawm nitrogen, suav nrog N-14 thiab N-15. Ntawm lawv, feem ntau cov isotope yog N-14, uas ua rau li 99% ntawm cov ntsiab lus nitrogen.
Ntxiv rau, 2N lossis ob lub nitrogen atoms tuaj yeem hu ua cov khoom siv nitrogen vim tias muaj kev ua haujlwm siab, thiab cov nitrogen atom dawb yog tri-radical nrog peb cov hluav taws xob tsis sib xws. Yog li ntawd, cov nitrogen atoms dawb no tuaj yeem yooj yim hnov mob nrog lwm cov tshuaj lom neeg los tsim cov nitrides, thiab thaum ob lub nitrogen atoms hnov mob ib leeg los ua ib qho zoo siab N2 molecule, cov tshuaj tiv thaiv tawm ntau lub zog.
Qhov txawv ntawm N2 thiab 2N yog dab tsi?
N2 thiab 2N yog ob hom tshuaj nitrogen. Qhov sib txawv tseem ceeb ntawm N2 thiab 2N yog tias N2 yog molecular nitrogen lossis nitrogen gas, qhov 2N tsuas yog hais txog ob lub atoms ntawm nitrogen. Yog li ntawd, N2 yog diatomic roj molecule thaum 2N yog ib tug dawb nitrogen atom. Ntxiv mus, N2 feem ntau yog inert thaum 2N yog reactive heev.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm N2 thiab 2N hauv daim ntawv tabular.
Summary – N2 vs 2N
Nitrogen yog ib qho tseem ceeb ntawm cov tshuaj. Qhov sib txawv tseem ceeb ntawm N2 thiab 2N yog tias N2 yog molecular nitrogen lossis nitrogen gas whereas 2N tsuas yog hais txog ob lub atoms ntawm nitrogen.
