Question

identify the atoms or ions that will be isoelectronic species F⁻,Ar,Mg²⁺,Na⁺,Al³⁺,Ca²⁺

F-,Mg2+,Ca2+

Na+,Ar

Na+,F-,Al3+,Mg2+

Ca2+,Na+

​

Answer 1

Answer:

Isoelectronic species are those species which have same number of electrons.

Among the options,

O

2−

=10 electrons

F

−

=10 electrons

Na

+

=10 electrons

Mg

2+

=10 electrons

And, N

3−

,O

2−

,F

−

and Ne have 10 electrons each.

So, option (i) & (iii) have isoelectronic species.

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