Which one of the following species has a plane triangular shape? (A) \( \mathrm{N}_{3}^{-} \) (B...

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Which one of the following species has a plane triangular shape?
(A) \( \mathrm{N}_{3}^{-} \)
(B) \( \mathrm{NO}_{3}^{-} \)
(C) \( \mathrm{NO}_{2}^{-} \)
(D) \( \mathrm{CO}_{2} \)
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