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NEETChemistryClassification of Elements and Periodicity in Properties

What is the valence shell electronic configuration for francium (Fr)?

Options

  1. A[Kr]5s1
  2. B[Rn]7s1
  3. C[Xe]6s1
  4. D[Ne]3s23p64s1

Correct answer

B. [Rn]7s1

Step-by-step solution

The paragraph provides the valence shell electronic configuration for francium (Fr) as "[Rn]7s1."

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