MCQ
Which of the following is not isoelectronic
- A$N{a^ + }$
- B$M{g^{2 + }}$
- C${O^{2 - }}$
- ✓$C{l^ - }$
✓
Answer
Correct option: D.
$C{l^ - }$
d
(d) $N{a^ + }$$ = 1{s^2}\,2{s^2}\,2{p^6}$
(d) $N{a^ + }$$ = 1{s^2}\,2{s^2}\,2{p^6}$
$Mg++$ $ = 1{s^2}\,2{s^2}\,2{p^6}$
${O^{2 - }}$$ = 1{s^2}\,2{s^2}\,2{p^6}$
$C{l^ - }$$ = 1{s^2}\,2{s^2}\,2{p^6}3{s^2}3{p^6}$
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