2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Fluorine yog cov electronegative tshaj plaws rub cov electron ceev ntawm nws thiab yog li nws nyuaj rau nitrogen atom pub dawb rau ib leeg ntawm electron. Down pab pawg raws li electronegativity txo qhov pib nce. Yog li, NF3 yog qhov tsawg kawg nkaus nitrogen trihalide.
Qhov twg halide yog qhov tsawg tshaj plaws?
Nam ntawm cov trihalides ntawm nitrogen, NF3, NCl3, NBr3 thiab NI3, NF3 yog qhov tsawg kawg nkaus.
Vim li cas NF3 yog qhov tsawg kawg nkaus?
NF3 tsawg kawg yog qhov yooj yim vim F yog feem ntau electronegative thiab nws yuav ua rau tus khub ntawm N atomthiab yog li cov electrons yuav tsawg dua daim ntawv pub dawb.
Qhov twg yog qhov yooj yim NH3 lossis NF3?
NH3 yog qhov yooj yim dua NF3. Nyob rau hauv NF3, N yog tsawg electronegative tshaj F, li no daim ntawv cog lus khub hloov mus rau F, yog li δ zoo nqi ceev ntawm N nce, li no nyiam pub electron txo. … Li no NH3 yog qhov yooj yim dua piv rau NF3.
Qhov twg hauv qab no yog qhov tsawg tshaj plaws?
The phenyl pawg yog pawg electron rho tawm (-I) thiab ib leeg khub ntawm nitrogen ntawm amine pawg delocalizes hauv lub nplhaib phenyl uas txo cov electron ceev thiab ua rau cov yam yam tsawg kawg nkaus.
Pom zoo:
Vim li cas cov kab mob yog qhov tseem ceeb tshaj plaws ntawm lub voj voog nitrogen?
Qhov tseem ceeb tshaj plaws ntawm lub voj voog yog kab mob. Cov kab mob pab cov nitrogen hloov ntawm lub xeev kom nws thiaj li siv tau. Thaum nitrogen absorbed los ntawm cov av, cov kab mob sib txawv pab nws hloov lub xeev kom nws thiaj li nqus tau los ntawm cov nroj tsuag.
Qhov twg yog qhov zoo tshaj plaws piav qhia ntawm cov khoom ntawm rhyolite?
Rhyolite yog ib qho extrusive igneous pob zeb nrog cov ntsiab lus silica siab heev. Nws feem ntau yog xim liab lossis grey nrog cov nplej me me uas lawv nyuaj rau saib yam tsis muaj tes lo ntsiab muag. piav qhia ntawm rhyolite yog dab tsi?
Ntawm qhov chaw twg muaj qhov sib txhuam tsawg tshaj plaws?
SMOOTH SURFACE muaj qhov tsawg kawg nkaus ntawm kev sib txhuam vim muaj qhov tsis zoo. Qhov chaw twg muaj kev sib txhuam tsawg? A mooth nto muaj me me toj thiab hav. Kuj tseem muaj cov khoom siv hluav taws xob electrostatic nyob nruab nrab ntawm qhov chaw, tab sis cov no tsis muaj zog dua li lub cev tiv thaiv kev zawv zawg.
Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?
marginal utility is zero. Tag nrho cov nqi hluav taws xob yog siab tshaj thaum marginal utility yog xoom. Qhov no yog vim muaj ntau txoj cai ntawm kev txo qis marginal utility uas hais tias tus neeg siv khoom noj ntau thiab ntau qhov zoo, qhov ntxiv rau tag nrho cov nqi hluav taws xob poob.
Puas yog cov hnub qub uas ze tshaj plaws kuj yog cov hnub qub ci tshaj plaws?
Lub hnub qub nyob ze tshaj plaws rau lub ntiaj teb yog nyob rau hauv Alpha Centauri triple-star system, kwv yees li 4.37 lub xyoo teeb. … Sirius A yog lub hnub qub ci ntsa iab tshaj plaws hauv lub ntiaj teb hmo ntuj, vim nws qhov ci ntsa iab thiab nws nyob ze rau peb.
