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NEETChemistryClassification of Elements and Periodicity in Properties

What is the seventh period (n = 7) known for?

Options

  1. AFilling of 6s and 7p orbitals.
  2. BFilling of 4f and 5d orbitals.
  3. CFilling of 7s, 5f, 6d, and 7p orbitals.
  4. DFilling of 3d orbitals.

Correct answer

C. Filling of 7s, 5f, 6d, and 7p orbitals.

Step-by-step solution

The seventh period (n = 7) is similar to the sixth period with the successive filling up of the 7s, 5f, 6d and 7p orbitals and includes most of the man-made radioactive elements.

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