1. Kimyoning asosiy tushuncha va qonunlari 1

25. Beshinchi davr, ikkinchi guruhning bosh guruhchasida joylashgan elementni aniqlang.
A) Sr B) Cd C) Ca D) Zn
26. Sn²⁺ ionining elektron konfiguratsiyasini aniqlang?
A) 5s¹ B) 5s²5p⁴ C) 4d¹⁰5s²5p² D) 4d¹⁰5s²
27. Pb²⁺ ionining elektron konfiguratsiyasini aniqlang.
A) 5d¹⁰6s¹ B) 4f¹⁴5s²
C) 4f¹⁴5d¹⁰6s² D) 4f¹⁴5d¹⁰
28. Kimyoviy elementlar davriy sistemasidagi asosiy guruhchasida tartib raqami kamayishi bilan element xossalari qanday o‘zgaradi?
A) atom radiusi kamayadi va elektromanfiylik ortadi
B) atom radiusi ortadi va metallik xossasi kamayadi
C) atom radiusi kamayadi va metallik xossasi ortadi
D) atom radiusi ortadi va elektromanfiylik kamayadi


3.Kimyoviy bog’lanishlar. Kristall panjara turlari


1.Qaysi birikmada ion bog’lanish mavjud emas?
A) KCl B) H2O C)Ba(NO₃)₂ D) Na3PO4


2. Glitserin molekulalarida qanday kimyoviy bog’lanish(lar) mavjud?
1) qutbsiz коvalent bog’lanish;
2) donor-akseptor bog’lanish;
3) metall bog’lanish; 4) vodorod bog’lanish;
5) ion bog’lanish; 6) qutbli kovalent bog’lanish.
A) 1, 5 B) faqat 6 C) 2, 3, 5 D) 1,4, 6


3 Glitserin molekulalarida qanday kimyoviy bog’lanish(lar) mavjud emas?
1) qutbsiz коvalent bog’lanish;
2) donor-akseptor bog’lanish;
3) metall bog’lanish;
4) qutbli kovalent bog’lanish;
5) vodorod bog’lanish; 6) ion bog’lanish.
A) 2,3,6 B) faqat 4 C) 1, 4, 5 D) 1, 6


4. Etilenglikol molekulalarida qanday kimyoviy bog’lanish(lar) mavjud?
1) qutbsiz kovalent bog’lanish;
2) vodorod bog’lanish: 3) metall bog’lanish;
4) ion bog’lanish; 5) donor- akseptor bog’lanish; 6) qutbli kovalent bog’lanish.
A) 1, 2, 6 B) 3, 4, 5 C) 1, 4 D) faqat 6


5. Etilenglikol molekulalarida qanday kimyoviy bog’lanish(lar) mavjud emas?
1) donor-akseptor bog’lanish;
2) qutbsiz kovalent bog’lanish;
3) metall bog’lanish; 4) ion bog’lanish;
5) vodorod bog’lanish;
6) qutbli kovalent bog’lanish.
A) 2, 4 B) faqat 6 C) 2, 5, 6 D) 1,3, 4


6. Sirka kislota molekulalarida qanday kimyoviy bog’lanish(lar) mavjud?
1) qutbsiz kovalent bog’lanish;
2) vodorod bog’lanish;
3) donor- akseptor bog’lanish; 4) ion bog’lanish; 5) qutbli kovalent bog’lanish:
6) metall bog’lanish
A) 1, 4 B) faqat 6 С) 1,2, 5 D) 3, 4, 6
7. Molekular kristall panjarali moddalar berilgan javobni belgilang.
A) «quruq muz», yod, naftalin
B) ozon, olmos, karborund
C) osh tuzi, kremniy, qattiq bor
D) muz, galit, ohaktosh