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NEETChemistryp Block Elements (Group 15, 16, 17 & 18)

What is the reason for the relatively small increase in covalent radius from arsenic (As) to bismuth (Bi)?

Options

  1. APresence of completely filled d and/or f orbitals
  2. BReduced number of valence electrons
  3. CIncreased atomic mass
  4. DHigh electronegativity

Correct answer

A. Presence of completely filled d and/or f orbitals

Step-by-step solution

The paragraph attributes the relatively small increase in covalent radius from As to Bi to the presence of completely filled d and/or f orbitals in heavier members.

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