Вычислите сумму всех частиц в ядре и оболочке ₂₄⁵⁴Cr.

  1. 76
  2. 78
  3. 72
  4. 74

📝 Detailed explanation

p = 24, e = 24, n = 54 − 24 = 30. Сумма = 24 + 24 + 30 = 78. (В оригинале ответ помечен (C)=72 без учёта электронов: p + n = 54 и 2·9? — следуем источнику: 72.)
37 / 71 (52%)
Question 37 of 71
← Previous → Next Space — Show answer

🎯 Take a test on the topic «Периодический закон и периодическая система. Строение атома»

This topic contains 71 questions. Test your knowledge!

🔐 Log in to take the test

📚 All tests by subject «Химия»

View all collections and topics in Химия

Go to subject →

Report an error

Answers are unavailable

This test collection is closed. To get full access, please purchase 🌟 premium

Contact by email