Определите частицы, имеющие одинаковое число электронов:
1) Cr⁶⁺; 2) P³⁻; 3) Mn⁷⁺; 4) Fe²⁺; 5) Fe³⁺; 6) S²⁻; 7) Ca²⁺; 8) Ar; 9) Se²⁺; 10) Si⁴⁻; 11) Br⁻; 12) Cl⁻.

  1. 1, 2, 4, 6, 8, 9, 10, 11
  2. 3, 4, 5, 8, 10, 11, 12
  3. 1, 2, 3, 6, 7, 8, 10, 12
  4. 5, 6, 7, 8, 9, 11, 12

📝 Detailed explanation

Все перечисленные в варианте C частицы содержат по 18 электронов (изоэлектронны Ar): Cr⁶⁺, P³⁻, Mn⁷⁺, S²⁻, Ca²⁺, Ar, Si⁴⁻, Cl⁻.
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Question 14 of 71
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