Which one of the following.... | JEE Main

JEE MAIN 2023

01-02-2023 S2

Question

Which one of the following sets of ions represents a collection of isoelectronic species? (Given : Atomic Number : $\mathrm{F}: 9, \mathrm{Cl}: 17, \mathrm{Na}=11, \mathrm{Mg}=12, \mathrm{Al}=13, \mathrm{~K}=19, \mathrm{Ca}=20, \mathrm{Sc}=21$ )

Select the correct option:

$\mathrm{Li}^{+}, \mathrm{Na}^{+}, \mathrm{Mg}^{2+}, \mathrm{Ca}^{2+}$

$\mathrm{Ba}^{2+}+\mathrm{Sr}^{2+}+\mathrm{K}+\mathrm{Ca}^{2+}$

$\mathrm{N}^3-, \mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{S}^{2-}$

$\mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}, \mathrm{Sc}^{3+}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Chemistry

Easy

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