Kimyoviy bog‘lanish

(2005-DTM.)
1. Azotning birikmalaridagi oksidlanish darajasini toping.
1) N₂H₂; 2) NH₂OH; 3) NH₄CI; 4) HNO₂;
5) CO(NH₂)₂
A) -3; -2; -4; +3; -2 B) -1; +3; -3; +3; -1
C) -2; -1; -3; +3; -3 D) +3; -3; +2; +3; +4
E) +2; +1; +3; +3; +3

2. Pikrin kislotadagi uglerod atomlari oksidlanish darajalarining yig‘indisi-

A) -1 B) +2 C) +4 D) +5 E) -3

3. 2,4-dixlorfenoksisirka kislota molekulasidagi barcha uglerod atomlari oksidlanish darajalari yig‘indisini hisoblang.

A) 0 B) 4 C) 2 D) 3 E) 1

4. Quyida keltirilgan ionlardagi markaziy atomning oksidlanish darajalarini ko‘rsating. CrO ,

A) +2,+6, +4,+3 B) +7,+3,-3,+5 C) +6,+5, -3,+3
D) +6,+5, +3,-3 E) +7,+5, -4,+5

5. P⁺⁵ va P^-3 ionlaridagi valent elektronlari sonini toping.

A) 0 va 8 B) 3 va 5 C) 5 va 3 D) 3 va 0 E) 6 va 9

6. Quyida berilgan moddalardagi azotning oksidlanish darajalarini tartib buyicha aniqlang.

NH₂OH, N₂H₄, NH₃, HNO₂, NO, HNO₃, NO₂.
A) -2, -3, -1, +3, +2, +4, +1
B) +4, +3, +2, +1, +5, -2, -3
C) -3, -2, -1, +1, +2, +4, +5
D) +5, +4, +3, +2, +1, -2, -3
E) -1, -2, -3, +3, +2, +5, +4

7. Azotning eng yuqori oksidlanish darajasini va shu holatdagi valentligini belgilang.

A) -3; III B) -5; V C) +5; IV D) +3; III E) +5, V

8. Birikmalarning qaysi birida oltingugurtning oksidlanish darajasi -1 ga teng.

A) vodorod sulfid B) kalsiy gidrosulfat
C) temir disulfid D) natriy sulfit
E) uglerod disulfid

9. Oksidlanish darajasi manfiy bo‘lgan azot birikmalarini toping.

1) HNO₃ 2) NH₄CI 3) NH₃ 4) NO 5) NH₂OH
6) NaNO₃
A) 2,3,6 B) 4,5,6 C) 1,2,4 D) 2,3,5 E) 1,2,6

10. Qaysi birikmalardagi uglerodning oksidlanish darajasi bir xil bo‘ladi?

1) is gazi 2) karbonat angidrid 3) metan kislota
4) formaldegid 5) xloroform
A) 3, 4, 5 B) 1, 3, 5 C) 2, 3 D) 1, 4, 5 E) 1, 2, 4

11. Azotning birikmalaridagi oksidlanish darajasini toping:

A) -3; -2; -4; +3; -2 B) -1; +3; -3; +3; -1
C) -2; -1; -3; +3; -3 D) +3; -3; +2; +3; +4
E) +2; +1; +3; +3; +3

12. Birikmalarning qaysi birida oltingugurtning oksidlanish darajasi -1 ga teng?

A) vodorod sulfid B) kalsiy gidrofosfat
C) temir disulfid D) natriy sulfit
E) uglerod disulfid

13. Vodorod manfiy oksidlanish darajasiga ega bo‘lgan birikmani toping:

A) suv B) sirka aldegid C) natriy gidrid
D) ammoniy ionii E) vodorod sulfid

14. Atomining valentligi uchga, oksidlanish darajasi esa nolga teng bo‘lgan molekulani toping:

A) ammiak B) vodorod ftorid C) azot
D) fosfor(V)-oksid E) xlor

15. Oksidlanish darajasi musbat bo‘lgan azot birikmalarini toping.

1) HNO₃ 2) NH₄Cl 3) NH₃ 4) NO 5) NH₂OH
6) NaNO₃
A) 2,3,6 B) 4,5,6 C) 1,2,4 D) 2,3,5 E) 1,4,6

16. Kislorod elementining eng yuqori valentlik namoyon qilish imkoniyati...

A) 3 B) 1 C) 5 D) 2 E) 4

17. [Pt(NH₃)₆]CI₄ kompleks birikmadagi markaziy atomning gibridlanish turini aniqlang.

A) sp³ B) sp³d¹ C) sp D) sp³d² E) sp²