7-guruh elementining eng quyi oksidi tarkibida massa jihatdan 9,1% kislorod bo'lsa, bu qaysi element?

  1. F
  2. Cl
  3. Br
  4. I

📝 Detailed explanation

7-guruh elementining eng quyi oksidi X₂O formulasiga ega.
Kislorodning massa ulushi: ω(O) = 16/(2M(X)+16) = 0,091.
16 = 0,091 × (2M(X) + 16)
16 = 0,182·M(X) + 1,456
14,544 = 0,182·M(X)
M(X) = 79,9 ≈ 80 g/mol.
Bu Brom (Br) elementiga to'g'ri keladi (Ar = 80).
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