Which of the Following Resonance Structures for OCN⁻ Will Contribute

question 14

Multiple Choice

Which of the following resonance structures for OCN⁻ will contribute most to the correct structure of OCN⁻?

• A)O(2 lone pairs)=C=N (2 lone pairs)
• B)O(1 lone pair)≡C-N(3 lone pairs)
• C)O(1 lone pair)=C(2 lp)=N(1 lone pair)
• D)O(3 lone pairs)-C≡N(with 1 lone pair)
• E)They all contribute equally to the correct structure of OCN⁻.

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