Answer:
The correct answer is option C.
Explanation:
Isoelectronic species are those atoms or ions which same number of electrons.But they differ in physical and chemical properties.
Atomic number of nitrogen atom is 7.
[tex][N]=1s^22s^22p^3[/tex]
[tex][N]^{3-}=1s^22s^22p^6[/tex]
Number electron in nitride ions = [tex]N^{3-}=10[/tex]
Atomic number of oxygen atom is 8.
[tex][O]=1s^22s^22p^4[/tex]
[tex][O]^{2-}=1s^22s^22p^6[/tex]
Number electron in oxide ions = [tex]O^{2-}=10[/tex]
[tex][Ne]=1s^22s^22p^6[/tex]
Number of electrons neon = [tex]Ne=10[/tex]
Hence, [tex]N^{3-} , O^{2-} \& Ne[/tex] are isoelectronic.
