Question

Which of the following atoms and ions are iso electronic(i.e have the same number of electrons) with a neon atom:

C , O${}^{2-}$ , N${}^{-}$ , F${}^{+}$ , Na${}^{+}$ , Al${}^{3+}$

• A. N${}^{-}$, Na${}^{+}$, Al${}^{3+}$
• B. C, O${}^{2-}$, Na${}^{+}$, F${}^{+}$
• C. O${}^{2-}$, Na${}^{+}$, Al${}^{3+}$
• D. C, O${}^{2-}$, F${}^{+}$, Al${}^{3+}$

Answer 1

The correct option is C O${}^{2-}$, Na${}^{+}$, Al${}^{3+}$

Isoelectronic Species : They are the atoms, molecules or ions which have the same number of electrons.
O${}^{2-}$, Na${}^{+}$, Al${}^{3+}$
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