Сколько p-элементов в современной периодической системе?

  1. 12
  2. 14
  3. 40
  4. 36

📝 Detailed explanation

p-элементы расположены в группах IIIA–VIIIA, по 6 элементов в каждом периоде, начиная со 2-го (6 периодов): 6·6 = 36.
2 / 71 (3%)
Question 2 of 71
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