Question:

The correct order of atomic radii is:

Updated On: Sep 30, 2024
  • (A) Ce > Eu > Ho > N
  • (B) N > Ce > Eu > Ho
  • (C) Eu > Ce > Ho > N 
  • (D) Ho > N > Eu > Ce
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The Correct Option is C

Solution and Explanation

Explanation:
Given elements are:Ce, Eu, Ho, NWe have to find the correct order of atomic radii.Cerium (Ce), europium (Eu) and Holmium (Ho) are lanthanide elements. Their metallic radius is:Ce = 181.8 pmEu = 208.4 pmHo = 176.2 pmAtomic radius of nitrogen (N) = 65 pmThus, the atomic radii follow the order:Eu > Ce > Ho > N. Hence, the correct option is (C).
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