Определите вещества, в которых соотношение σ- и π-связей равно 3:1.
1) H₂SO₄; 2) C₂H₂; 3) C₂H₄; 4) C₂H₆; 5) HClO₃; 6) HNO₂.

  1. 1, 6
  2. 2, 4
  3. 2, 6
  4. 3, 5

📝 Detailed explanation

В C₂H₂: σ=3, π=2 (нет). В HNO₂ (H–O–N=O): σ=3, π=1 (3:1). В H₂SO₄: σ=6, π=2 (3:1). Правильный ответ — 1 и 6.
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