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NEETChemistryd and f Block Elements

Why is the trend in the third ionization enthalpies less complicated by the 4s orbital factor?

Options

  1. A4s orbitals have lower energy
  2. B4s orbitals have higher energy
  3. C4s orbitals have more electrons
  4. D4s orbitals are not involved in ionization

Correct answer

D. 4s orbitals are not involved in ionization

Step-by-step solution

The trend in the third ionization enthalpies is less complicated by the 4s orbital factor because the 4s electrons are not involved in ionization.

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