Kimyoviy bog‘lanish

96-15son-106.
25. Mis kuporosida mis ionining koordinatsion sonini toping.
A) 6 B) 4 C) 2 D) 5 E) 3
01-2son-63.
26. Qaysi birikmalarda azot atomining oksidlanish darajalari bir xil, lekin valentliklari farq qiladi?
1. NH₄CI 2. KN0₃ 3. KN0₂ 4. NH₃
A) 1 va 2 B) 1 va 3 C) 2 va 3 D) 1 va 4 E) 3 va 4
97-1son-41.
27. Quyidagi birikmalarda uglerod atomlarining oksidlanish darajalari ketma-ketligini ko‘rsating.
1. HCOOH 2.COCI₂ 3. HCHO 4. CH₃OH
A) -2,0,+2,+4 B) +2,+4,0,-2 C) 0,+2,+4,-2
D) +4,+2,0,-2 E) 0,-2,+2,+4
97-1son-62.
28. Quyidagi birikmalardagi oltingugurtning valentliklari keltirilgan qatorni ko‘rsating:
1.CS₂ 2.SF₆ 3.Na₂SO₃ 4.H₂S
A) 2,6,2,4 B) 2,6,4,2 C) 2,2,4,6 D) 4,6,2,2 E) 4,6,4,4
97-2son-5.
29. Qaysi modda molekulasida fosfor atomining oksidlanish darajasi eng kichik:
A) H₃PO₄ B) H₃PO₃ C) HPO₃ D) H₃PO₂ E) H₄P₂O₇
97-2son-38.
30. Turnbul ko‘ki Fe₃[Fe(CN)₆]₂ da temirning oksidlanish darajalari ketma-ketligi qanday?
A) +3,+2 B) +3,+3 C) +2,+3 D) +2,+2 E) +2,+4
02-10son-14.
31. Vodorodning oksidlanish darajasi -1 bo‘lgan birikmasini ko‘rsating?
A) NaOH B) NaH C) PH₃ D) H₂O E) HF
97-2son-53.
32. Muayyan element ftor va kisloroddan so‘ng elektromanfiyligi eng yuqori bo‘lgan elementlardan biri bo‘lib, u +1,+3,+5,+7 oksidlanish darajalarini namoyon qilsa, quyidagi formulalardan qaysi biri shu element uchun xos hisoblanadi?
1) NaEO₃ 2) NaEO₄ 3) K₂EO₂ 4) Li₂EO₃ 5) KEO
A) 2,4,5 B) 2,3 C) 1,2,5 D) 1,4 E) 4,5
02-10son-15.
33. Tartib raqami 31 bo‘lgan elementning yuqori oksidining formulasi qanday bo‘ladi?
A) E₂O B) EO C) EO₂ D) E₂O₃ E) E₂O₅