Oddiy va murakkab moddalar

71. H₂C₂O₄ va NaSCN da uglerodning oksidlanish darajasini aniqlang.
A) +3,+4; B) +2,+4; C) +4,+4; D) +3,+3.
72. [BH₄]^– ionida B atomining valentligi, oksidlanish darajasi va gibridlanish turini aniqlang.
A) 4; +3 va sp³; B) 3; +3 va sp²;
C) 4; -3 va sp³; D) 3; -3 va sp.
73. Xlorit kislotadagi markaziy atomning oksidlanish darajasini va gibridlanish holatini aniqlang.
A) sp³; +3; B) sp², +3; C) sp, +2; D) sp³,+2.
74. Azotning oksidlanish darajasi ortib boradigan qatorni ko’rsating.
A) NO, NO₂, NH₃; B) NH₃, HNO₃, HNO₂;
C) NH₃, NO, HNO₃; D) KNO₃, KNO₂, NO₂.
75. Molekula tarkibidagi atomlarning valentligi bilan oksidlanish darajasi bir xil qiymatga ega bo’lmagan moddalar soni nechta?
1) NH₄NO₃; 2) O₂; 3) H₂O₂;
4) CH₂Cl₂; 5) F₂O; 6) CO;
7) NH₃; 8) H₃PO₄; 9) C₆H₁₂O₆;
A) 6 B) 5 C) 4 D) 7
76. Quyidagi ionlar [H₃O]⁺ va [H₂F]⁺ ning markaziy atomlari uchun valentlik va oksidlanish darajasini ko’rsating.
1) 2; 2) 3; 3) 1; 4) -2; 5) -3; 6) -1;
A) 2,5 va 3,6; B) 1,5 va 1,6;
C) 2,4 va 1,6; D) 2,4 va 3,6.
77. E³⁺ (…4s²4p²) hosil qilgan elementning eng past va eng yuqori oksidlanish darajasini toping.
A) -1, +7; B) -2, +6; C) -3, +5; D) -4, +4.
78. Kislorodning minimal va maksimal oksidlanish darajasi, maksimal valentligi namoyon qilish imkoniyati ko’rsatilgan javobni belgilang.
A) -2,+2;2 B) -2,+2;3 C) -2,+2;4 D) -1,+1;2