Which of the following pair(s) represent(s) the isoelectronic species?

S^{2 -}

S c^{3 +}

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S O_{2}

N O_{3}^{-}

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N_{2}

C N^{-}

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N H_{3}

H_{3} O^{+}

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Solution

The correct options are
A $S^{2 -}$ & $S c^{3 +}$
B $S O_{2}$ & $N O_{3}^{-}$
C $N H_{3}$ & $H_{3} O^{+}$
D $N_{2}$ & $C N^{-}$
Isoelectronic species means species which have the same number of electrons.
A) $S^{2 -} & S C^{3 +} e_{s}^{-} = 16 + 2 & e_{s}^{-} = 21 - 3 e_{s}^{-} = 18 & e_{s}^{-} = 18$
B) $S O_{2} & {N O}_{3}^{-} e_{s}^{-} = 16 + 16 = 32 & e_{s}^{-} = 7 + 24 + 1 = 32$
C) $N_{2} & C N^{-} e_{s}^{-} = 14 & e_{s}^{-} = 6 + 7 + 1 = 14$
D) $N H_{3} & H_{3} O^{+} e_{s}^{-} = 7 + 3 = 10 & e_{s}^{-} = 8 + 3 - 1 = 10$

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Similar questions

Among the following species, the isostructural pairs are $N F_{3}$ , ${N O_{3}}^{-}$ , $B F_{3}$ , ${H_{3} O}^{+}$ , $H N_{3}$

Among the following species, identify the iso-structural pairs.

$N F_{3}, N O_{3}^{-}, B F_{3}, H_{3} O^{+}, N_{3} H$

N F_{3}, N O_{3}^{-}, B F_{3}, H_{3} O^{+}, H N_{3}

N F_{3}, N O_{3}^{-}, B F_{3}, H_{3} O^{+}

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