Consider structure (1) (shown immediately below). Which of the followi (shown below structure I) is/are resonance structures of I? NH I :ÖH NH NH NH NH 1 2 4 Select one: A. 4 only B. 1 and 3 3.

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Chapter1: Chemical Foundations
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HW18

**Question:**

Consider structure (I) (shown immediately below). Which of the following (shown below structure I) is/are resonance structures of I?

**Structure (I):**

The main structure I depicted is a 5-membered ring with nitrogen (NH) and a carbonyl group (O) at the top, showcasing electrons around the oxygen.

**Possible Resonance Structures:**

1. Structure 1 shows a similar 5-membered ring with a positive charge on nitrogen and a negative charge on an oxygen with two lone pairs.
2. Structure 2 shows a 5-membered ring with an OH group attached, nitrogen with two lone pairs, and a neutral charge.
3. Structure 3 resembles structure I, but with a positive charge on nitrogen and a negative charge on oxygen, each having two lone pairs.
4. Structure 4 shows a double bond between the nitrogen and the carbonyl carbon, with oxygen possessing two lone pairs and no charges indicated.

**Answer Options:**

- A. 4 only
- B. 1 and 3
- C. 1 only
- D. 3 only
- E. 2 only
Transcribed Image Text:**Question:** Consider structure (I) (shown immediately below). Which of the following (shown below structure I) is/are resonance structures of I? **Structure (I):** The main structure I depicted is a 5-membered ring with nitrogen (NH) and a carbonyl group (O) at the top, showcasing electrons around the oxygen. **Possible Resonance Structures:** 1. Structure 1 shows a similar 5-membered ring with a positive charge on nitrogen and a negative charge on an oxygen with two lone pairs. 2. Structure 2 shows a 5-membered ring with an OH group attached, nitrogen with two lone pairs, and a neutral charge. 3. Structure 3 resembles structure I, but with a positive charge on nitrogen and a negative charge on oxygen, each having two lone pairs. 4. Structure 4 shows a double bond between the nitrogen and the carbonyl carbon, with oxygen possessing two lone pairs and no charges indicated. **Answer Options:** - A. 4 only - B. 1 and 3 - C. 1 only - D. 3 only - E. 2 only
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