Kimyoviy bog‘lanish

96-1son-44.
6. Peryodat kislotasida yodning valentligi qanday?
A) 0 B) 1 C) 3 D) 5 E) 7
96-3son-14.
7. Azot(V) oksidi molekulasidagi azotning oksidlanish darajasini, valentligini, donor-akseptor bog‘lanishlar sonini aniqlang.
A) +3,4,1 B) +3,4,0 C) +5,4,1 D) +5,4,0 E) +5,3,1
96-3son-39.
8. Quyidagi birikmalarda uglerod atomining oksidlanish darajalari ketma-ketligini aniqlang.
COCI₂ CH₂CI₂ CHCI₃ CCI₄
A) +4,+2,-2,0 B) 0,-2,+3,-4 C) +4,0,+2,+4
D) +2,+4,-2,-4 E) +4,-2,-4,-4
96-4son-17.
9. Keltirilgan birikmalarning qaysilarida oltingugurtning valentligi to‘rtga teng?
1.Na₂SO₄ 2.SO₂ 3.AI₂(SO₄)₃ 4.K₂SO₃ 5.H₂S
A) 1,2 B) 3,4 C) 1,5 D) 3,5 E) 2,4
96-5son-11.
10. Oksidlanish darajasi nol bo‘lgan elementli birikmalar qatorini aniqlang.
A) formaldegid, dixlormetan B) metanol, metan
C) vodorod sulfid, vodorod xlorid
D) ammiak, ammoniy karbonat E) chumoli kislota
97-11son-110.
11. Quyidagi birikmalarda oksidlanish darajasi +5 bo‘lgan elementlarni aniqlang.
KNO₃,H₃PO₄ , CHO₂,Fe₂O₃, HCIO₃, K₂MnO₄,K₂Cr₂O₇
A) C,Cr B) Mn,N,Cr C) N,P,CI D) Fe,CI,Mn E) C,CI,K
96-7son-12.
12. Oksidlanish darajasi eng kichik bo‘lgan azot tutgan zarrachalarni tanlang.
1. N₂ 2. NH 3. NH₃ 4. N₂O₅ 5. NO
A) 1,2 B) 1,3 C) 2,3 D) 3,4 E) 4,5
96-8son-75.
13. Qaysi modda tarkibidagi elementning valentligi-(III) ga, oksidlanish darajasi (0) nolga teng?
A) vodorod B) xlor C) azot D) kislorod
E) karbonat angidrid
03-8son-45.
14. Element +3 oksidlanish darajasiga o‘tganda qolgan elektronlar soni 32 ta bo‘lsa, uning eng past va eng yuqori oksidlanish darajalari qanday bo‘ladi?
A) -2,+6 B) -2,+5 C) -3,+5 D) -4,+4 E) -1,+7