Class 11 Chemistry Structure of Atom Quantum number, Electronic configuration and Shape of orbitals

Medium

Which of the following species has an equal number of electrons in the outermost shell and the penultimate shell?

A
$F^{-}$
B
$Ca^{2+}$
C
$Mg^{2+}$
D
$O^{2-}$

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Structure of Atom

Subtopic

Quantum number, Electronic configuration and Shape of orbitals

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