Укажите квантовые числа (n, l, ml, s) последнего электрона в 4f⁹.

  1. 4; 3; −2; −½
  2. 4; 3; −2; +½
  3. 4; 3; +1; −½
  4. 4; 3; −2; +½

📝 Detailed explanation

В 4f сначала 7 ē заполняют m=−3…+3 со спином +½, 8-й (−3,−½), 9-й (−2,−½). Итого n=4, l=3, ml=−2, s=−½.
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