Question

which of the following is not isoelectronic with others?
a)Na
b)Mg
c)O2
d)Cl

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Answer 1

Answer:

a) Na are not isoelectronic..

Explanation:

As an ion can never be isoelectronic to its original element ..

Answer 2

Which of the following is not isoelectronic' Which of the following is not isoelectronic? [ MP PET 2002] a) Na+ b) Mg2+ c) O2- d) Cl-