Oddiy va murakkab moddalar

23. Sariq qon tuzi K₄[Fe(CN)₆] tarkibidagi temirning oksidlanish darajasini toping.
A) 0 B) +2 C) +4 D) +6
24. Qizil qon tuzi K₃[Fe(CN)₆] tarkibidagi uglerodning oksidlanish darajasini toping.
A) 0 B) +2 C) +3 D) +4
25. Gidroksoniy ionidagi kislorodning oksidlanish darajasi, valentligi va gibridlanish turini aniqlang.
A) -2,3, sp³ B) -2,2, sp² C) -3,3, sp² D) -3,2, sp²
26. Quyidagi kremniy birikmalari uchun keltirilgan tarkiblardan kremniyning oksidlanish darajalarini toping.
Dala shpati – K₂Al₂Si₆O₁₆;
Kaolin – H₄Al₂Si₂O₉; Asbest – CaMg₃Si₄O₁₂;
A) +4,+4,+4; B) +4,-4,+4;
C) +4,-4,-4; D) +4,+2,+4.
27. Element atomining elektron konfiguratsiyasi quyidagicha tugallanadi: …3d⁵4s². Bu qaysi element? Uning maksimal va minimal oksidlanish darajasini toping.
A) Mn, +2,-1; B) Cr, +6,-2;
C) Fe, +3,0; D) Mn, +7,0.
28. Quyidagi birikmalarda oksidlanish darajasi +5 bo’lgan elementlarni aniqlang.
KNO₃; H₃PO₄; SnO₂; Fe₂O₃;
HClO₃; K₂MnO₄; K₂Cr₂O₇;
A) Sn, Cr; B) Mn, N, Cr;
C) N, P, Cl; D) Sn, Cl, K.
29. Quyidagi birikmalarning qaysi birida marganesning oksidlanish darajasi +4 ga teng?
A) KMnO₄ B) MnO(OH) ₂
C) MnSO₄ D) Mn₂O₃
30. Quyidagi birikmalarning qaysi birida azotning oksidlanish darajasi noldan kichik bo’ladi?
1) litiy nitrid; 2) bariy nitrid; 3) azot (II) oksid; 4) ammiak; 5) nitrat kislota; 6) azot (V) oksid;
A) 2,4,6; B) 1,2,6; C) 1,2,4; D) 1,3,5.
31. Quyidagi birikmalarni ular tarkibidagi azot atomining oksidlanish darajasi ortib borish tartibida joylashtiring.
1) ammoniy xlorid; 2) gidrazin – N₂H₄;
3) natriy nitrat; 4) azot (III) oksid;
5) azot (IV) oksid;
A) 2,1,4,5,3; B) 1,2,4,5,3;
C) 3,4,5,2,1; D) 1,2,5,4,3.