Question
Sun July 15, 2012 By:

What do you mean by isoelectronic molecules & ions?

Expert Reply
Sun July 15, 2012
Two or more molecular entities (atoms, molecules, or ions) are described as being isoelectronic with each other if they have the same number of electrons or a similar electron configuration and the same structure (number and connectivity of atoms), regardless of the nature of the elements involved. 
the cations K+, Ca2+, and Sc3+ are isoelectronic 
Anions Cl?, S2?, and P3? are all isoelectronic 
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