Степень окисления серы в сероводороде:

  1. +2
  2. -2
  3. +4
  4. +6

📝 Detailed explanation

В H2S:
Водород имеет +1.
2 × (+1) = +2.
Молекула нейтральна → сера = –2.
12 / 23 (52%)
Question 12 of 23
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