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NEETChemistryd and f Block Elements

At which element in the actinoid series do the 5f orbitals become complete?

Options

  1. AThorium (Z = 90)
  2. BUranium (Z = 92)
  3. CNeptunium (Z = 93)
  4. DElement 103

Correct answer

D. Element 103

Step-by-step solution

The 5f orbitals become complete at element 103 in the actinoid series.

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