Class 11 Chemistry Structure of Atom Atomic number, Mass number, Atomic species

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Which of the following pairs is an example of isoelectronic species?

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A
$O^{2-} ; Na^{+}$
B
$O^{2-} ; F$
C
$K ; Ca^{2+}$
D
$Ar ; Al^{3+}$

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Structure of Atom

Subtopic

Atomic number, Mass number, Atomic species

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