Укажите элементы, проявляющие донорные свойства в молекулах H₃O⁺, NH₄⁺, CO, HNO₃.

  1. O, H, C, N
  2. O, N, O, N
  3. O, N, O, H
  4. O, N, C, N

📝 Detailed explanation

В H₃O⁺ донор — O, в NH₄⁺ — N, в CO — C (донор), в HNO₃ — N.
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