MCAT Organic Chemistry Question 34: Answer and Explanation
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Question: 34
4. The hybridizations of the carbon and nitrogen atoms in CN- are:
- A. sp3 and sp3, respectively.
- B. sp3 and sp, respectively.
- C. sp and sp3, respectively.
- D. sp and sp, respectively.
Correct Answer: D
Explanation:
The carbon and nitrogen atoms are connected by a triple bond in CN– (:C≡N:–). A triple-bonded atom is sp hybridized; one s-orbital hybridizes with one p-orbital to form two sp-hybridized orbitals. The two remaining unhybridized p-orbitals take part in the formation of two π bonds.