Which one of the following sets of ions represents a collection of isoelectronic species?

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Which one of the following sets of ions represents a collection of isoelectronic species?

ChemistryStructure of AtomJEE MainJEE Main 2006

Options:

A
$\mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}, \mathrm{Sc}^{3+}$
B
$\mathrm{Ba}^{2+}, \mathrm{Sr}^{2+}, \mathrm{K}^{+}, \mathrm{S}^{2-}$
C
$\mathrm{N}^{3-}, \mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{S}^{2-}$
D
$\mathrm{Li}^{+}, \mathrm{Na}^{+}, \mathrm{Mg}^{2+}, \mathrm{Ca}^{2+}$

Solution:

2352 Upvotes Verified Answer

The correct answer is:
$\mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}, \mathrm{Sc}^{3+}$

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