Question:medium

In which of the following, elements are correctly arranged in the decreasing order of atomic radii?

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Due to lanthanoid contraction, \[ \boxed{ \text{Atomic radius decreases from Ce to Lu.} } \] Eu is relatively larger because of its stable half-filled \[ \boxed{4f^7} \] configuration.
Updated On: Jul 18, 2026
  • Eu \(>\) Ce \(>\) Gd \(>\) Ho
  • Ce \(>\) Eu \(>\) Gd \(>\) Ho
  • Gd \(>\) Eu \(>\) Ce \(>\) Ho
  • Ho \(>\) Ce \(>\) Eu \(>\) Gd
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The Correct Option is A

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