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NEETChemistryd and f Block Elements

Which element is an exception regarding the occupancy of 5f orbitals?

Options

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

Correct answer

A. Thorium (Z = 90)

Step-by-step solution

Thorium (Z = 90) is an exception regarding the occupancy of 5f orbitals.

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