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Chemistry
The pair, in which ions are isoelectronic with Al 3+ is :-
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Q. The pair, in which ions are isoelectronic with $Al ^{3+}$ is :-
JEE Main
JEE Main 2022
Classification of Elements and Periodicity in Properties
A
$Br ^{-}$and $Be ^{2+}$
9%
B
$Cl ^{-}$and $Li ^{+}$
20%
C
$S ^{2-}$ and $K ^{+}$
12%
D
$O ^{2-}$ and $Mg ^{2+}$
58%
Solution:
Isoelectronic species have same no. of electrons $Al ^{+3}, O ^{2-}, Mg ^{+2}$ all have $10$ electrons.