Question

Among the following ions the set with isoelectronic ions is
a) N3-,Na+,Al 3+
b) Mg 2+ ,Ba+Ca+
c) Na+,Mg+,Al3+
d)Ca2+,S2-,Cl-
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Answer 1

Answer:

Option 1 correct friend

As all contains 10 electrons.....

Nitrogen atomic number 7 and it gains 3 electrons

Sodium atomic number is 11and losing 1 electron

Aluminum is 13 and losing 3 electrons

Hope it is useful for you mate!!!!

Answer 2

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.

Explanation: