ππ‘ππ¦ππππ’ππ
olgan ilmingiz asosida javobingizni belgilang, keyin asl IUPAC tahlillari beriladi
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IUPAC asl qoidalari asosida moddalar nomenklaturasiga men bilgan o'zbek adabiyotlaridan faqat ikkita kitob amal qilgan, bular:
1οΈβ£ ORGANIK KIMYO (R.A. Shoymardonov)
2οΈβ£ UNIVERSAL KIMYO (B.F. Raxmanov)
ustozπ¨π»βπ« Bunyod Raxmanov
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ustozπ¨π»βπ« Bunyod Raxmanov
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β€2π1
π§ miyani charxlaymizβοΈ
βοΈ yechimingizni tahlil guruhida bildiring
β οΈ deylik oilaviy konditsioner oldingiz, unda freon markasi yozilgan bo'ladi, unga qarab xavfsizlik darajasi aniqlanadi, agar kimyo fanini o'qib buni bilmasangiz, demak oilangizni xavfga qo'yishingiz mumkin.
ustozπ¨π»βπ« Bunyod Raxmanov
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ustozπ¨π»βπ« Bunyod Raxmanov
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π2π1
π§ miyani charxlaymizβοΈ
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ustozπ¨π»βπ« Bunyod Raxmanov
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ustozπ¨π»βπ« Bunyod Raxmanov
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β€1π1
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Nega bu safar kitobni nashrdan chiqarishga shoshmayapman. Chunki, kitobni nafaqat kuchli nazariyalar bilan boyityapman, balki mujmal&murakkab masalalar uchun maxsus matematik formulalar kiritib, amaliy hisoblashlarni kΓ²rsatib ham beryapman. Bu kitob shu darajada mukammal bΓ²ldiki, xatto Γ²z aqlimni shoshiryapti. Xullas, nasib kΓ²rasiz, aslida asl ilmiy kitob qanday bΓ²lishini
ustozπ¨π»βπ« Bunyod Raxmanov
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β€3π₯3π1
Forwarded from ππ‘ππ¦ππππ’ππ
Simob n.sh.da ham suyuq agregat holatdagi yagona metall, qolgan metallar esa qattiq, ya'ni aniq o'lchamli kristall panjaralarga ega.
ustozπ¨π»βπ« Bunyod Raxmanov
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Nega aynan Hg metallar ichida suyuq, xatto massasi og'ir bo'lsada
Keling shu savolga ilmiy asosda javob beramiz. Simob 6-davrning IIB guruhida joylashgan bo'lib, elektron konfiguratsiyasi eng barqaror holda, ya'ni orbitallari to'liq elektronlar bilan to'lgan. Ayniqsa, 4fΒΉβ΄ orbitallari to'liq elektronlar bilan qoplanishi alohida ahamiyatli bo'lib, orbitallarning yadro bilan potensialini (markazga intilma kuchini) oshirib beradi. Natijada simob atomi energetik barqarorlikka erishgan bo'lib, orbitallardagi elektronlar atom yadrosi bilan mustahkam bog'langan. Bilamizki, metall kristall panjara hosil bo'lishida atomlar panjara bo'shliqlariga elektronlar joylashtirishi natijasida atomlararo o'zaro umumiy barqaror sitema hosil qiladi. Ammo, simob shundog'am atom (xususiy) holida barqaror sistema holiga kelgan. Energetik afzallik nuqtai nazardan simobda atomlararo kristall panjaralar oraliqlariga elektronlarni joylashtirib umumiy sistema hosil qilgandan ko'ra, o'zi alohida atom (xususiy) holida orbitallarida elektronlarni saqlash optimalligi aniqlangan. Natijada, atomlararo bog' zaifligi sabab, barqaror kristall panjara ham shakllanmaydi.
Xulosa: simobning boshqa metallardan farqli ravishda n.sh.da ham suyuq metall bo'lishining asosiy sababi, atom (xususiy) sifatida barqarorligi atomlararo (umumiy) kristall panjara barqarorligidan ustunligidir.
tahlilchi: ustoz Bunyod Raxmanov
ustozπ¨π»βπ« Bunyod Raxmanov
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β€4π₯2π1
β2οΈβ£4οΈβ£π3οΈβ£0οΈβ£
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ustozπ¨π»βπ« Bunyod Raxmanov
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π1π1
ChemOffice
β2οΈβ£4οΈβ£π3οΈβ£0οΈβ£ ustozπ¨π»βπ« Bunyod Raxmanov kanalπ @ChemOfficer kanalπ @olympic_uz_ru_en
ustozπ¨π»βπ« Bunyod Raxmanov
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β€3π₯3
ustozπ¨π»βπ« Bunyod Raxmanov
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π₯11β€6π5π€1
π§ miyani charxlaymizβοΈ
βοΈ yechimingizni tahlil guruhida bildiring
ustozπ¨π»βπ« Bunyod Raxmanov
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ustozπ¨π»βπ« Bunyod Raxmanov
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ustozπ¨π»βπ« Bunyod Raxmanov
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...tabiat shunday go'zalki, xech qanday sun'iy go'zallik uni o'rnini bosa olmaydi, sizlargada ulashgim keldi
ustozπ¨π»βπ« Bunyod Raxmanov
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π7β€4
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π1π€1
kanal faol a'zosi Γ²qigan "ilmiy" adabiyoti asosida men tashlagan nazariy savolga e'tiroz bildiribdi
ustozπ¨π»βπ« Bunyod Raxmanov
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π1
Reaksiya nukleofil reaksiyaning Sn2 mexanizmida borib, bunda kislotali muhit katta rΓ²l Γ²ynaydi. Protolitik nazariyaga asosan, kuchli kislota degani, demakki uning tarkibida kuchsiz asos bor degani va shu tufayli barqaror birikma (H2O) hosil qilish uchun Γ²ziga proton (H+) qabul qiladi va natijada NO2+ ionini hosil bΓ²ladi:
HOβNO2 + H+ β> NO2+ + H2O
Spirtdagi O atomi Δ ga tΓ²yingan bΓ²lib, musbat zaryadni izlaydi (nukleofil). Natijada spirt va NO2+ ioni Sn2 mexanizmni yaratadi:
H H
| |
C2H5O: + NO2+ β> [C2H5O:NO2]+
H
|
[C2H5O:NO2]+ β> C2H5NO2 + H+
Xulosa: spirtlarning nitrolanish reaksiyasida spirtlardan βH, nitrat kislotadan esa βOH ishtirok etadi.
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π₯4β€2
ustozπ¨π»βπ« Bunyod Raxmanov
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