JEE Main · 2006 · 30 Apr 2006 · Offline · Atomic Structure

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Which one of the following sets of ions represents a collection of isoelectronic species?
  1. (A)✓ Correct
  2. (B)
  3. (C)
  4. (D)

Answer: (A)

Solution

Isoelectronic species share the same electron count. Taking as , as , as and as , all four carry 18 electrons and match the argon configuration. The other sets mix ions of differing electron counts, so the collection is the isoelectronic one.

JEE Main · 2006 · 30 Apr 2006 · Offline · Single correct option

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