MCQ
The pair, in which ions are isoelectronic with $Al ^{3+}$ is ..... .
- A$Br ^{-}$and $Be ^{2+}$
- B$Cl ^{-}$and $Li ^{+}$
- C$S ^{2-}$ and $K ^{+}$
- ✓$O ^{2-}$ and $Mg ^{2+}$
✓
Answer
Correct option: D.
$O ^{2-}$ and $Mg ^{2+}$
d
Isoelectronic species have same no. of electrons $Al ^{+3}, O ^{2-}, Mg ^{+2}$ all have $10$ electrons.
Isoelectronic species have same no. of electrons $Al ^{+3}, O ^{2-}, Mg ^{+2}$ all have $10$ electrons.
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