Verified Solution • 2025–26 Session
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QJEEM19Ch74cc: JEE Main 2019 Chemistry - Class 11 JEEM19Ch74cc Solution: The isoelectronic set of ions is :
The isoelectronic set of ions is :
Multiple Choice Options
- A F–, Li+, Na+ and Mg2+
- B Li+, Na+, O2- and F-
- C N3–, O2-, F- and Na+
- D N3–, Li+, Mg2+ and O2-
Step-by-Step Verified Solution
Atomic numbers of N, O, F and Na are 7, 8, 9 and 11 respectively.
Therefore, total number of electrons in each of N3-, O2–, F– and Na+ is 10 and hence they are isoelectronic.
Therefore, total number of electrons in each of N3-, O2–, F– and Na+ is 10 and hence they are isoelectronic.