Сколько электронов находится во внешнем электронном слое атома, в ядре которого 14 протонов?

  1. 2
  2. 4
  3. 8
  4. 14

📝 Detailed explanation

14 протонов — это кремний Si (1s² 2s² 2p⁶ 3s² 3p²). На внешнем слое 4 электрона.
2 / 28 (7%)
Question 2 of 28
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