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The isoelectronic pair is:

  1. A
  2. B
  3. C
  4. D

Solution & Step-by-step Explanation

Isoelectronic species have the same total number of electrons.: electrons.: electrons.Pair (d) is isoelectronic. (Note: Valence electrons for both are also same: vs ).

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The isoelectronic pair is:
A
B
C
D

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