Fanining stexiometrik qonunlari

60. Bertole tuzida xlorning oksidlanish darajasi nechaga teng?

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

61. Vodorod peroksidda vodorodning oksidlanish darajasi nechaga teng?

A) +1 B) +2 C) -1 D) -2

62. Xlor atomi uchun qanday oksidlanish darajalari xarakterli?

A) -1,0; B) -1,0,+1;

C) 0,+1,+2; D) -1,0,+1,+3,+5,+7.

63. Na₂B₄O₇ moddasida borning oksidlanish darajasini aniqlang.

A) 0 B) +1 C) +3 D) +2

64. Tarkibi K₂Cr₂O₇ bo’lgan molekuladagi elementlarning valentligi va oksidlanish darajasi yozilgan qatorni toping.

A) 1,3,2; +1,-3,-2; B) 2,6,2; +2,+2,-2;

C) 1,2,2; +1,+3,-2; D) 1,6,2; +1,+6,-2.

65. Ammoniy sulfat tarkibidagi azotning valentligi va oksidlanish darajasini ko’rsating.

A) 3,-4; B) 4,-4; C) 3,-3; D) 4,-3.

66. Galogenlar uchun (ftordan tashqari) qaysi oksidlanish darajalari mavjud?

A) +1,+3,+5; B) -1,+1,+3,+5,+7;

C) -1,+3,+5,+7; D) +1,+5,+7.

67. Birikmalarni xlor atomining oksidlanish darajasi kamayib borish tartibida joylashtiring.

1. HClO; 2. NaClO₃; 3. Cl₂; 4. SOCl₂;

5. KClO₄; 6. Mg(ClO₂)₂

A) 1.4.3.6.2.5; B) 4.3.1.6.2.5;

C) 5.2.6.1.3.4; D) 5.6.4.2.3.1.

68. Qaysi moddalar molekulasida markaziy atomning oksidlanish darajasi kattaroq?

1) CaCrO₄; 2) NH₄NO₃; 3) K₃[Fe(CN)₆];

4) Fe₂(SO₄)₃; 5) [Ag(NH₃)₂]OH; 6) Mn[PtF₆]

A) 1,4 B) 1,2 C) 4,6 D) 1,3

69. Oksidlanish darajasi va valentligi bir xil bo’lmagan atomlari bo’lgan molekulalarni tanlang.

1) NH₃; 2) SiO₂; 3) CO₂; 4) H₃PO₄; 5) NH₄Cl; 6) C₂H₆; 7) CO; 8) H₂SO₄; 9) N₂O; 10) HNO₃

A) 2,5,6,9,10; B) 5,6,7,9,10;

C) 1,5,7,8,9; D) 3,4,5,6,7.

70. Quyidagi birikmalarning qaysi birlarida azotning oksidlanish darajasi musbat qiymatga ega?

1. litiy nitrid; 2. bariy nitrid; 3. azot(II)oksid;

4. ammiak; 5. nitrit kislota; 6. azot (V) oksid;

A) 3,5,6; B) 1,2,6; C) 2,4,6; D) 1,3,5.

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