What is the correct lewis structure of hydrogen cyanide, HCN? H=CN: H-C3 EN: HICIN: HIC N -C-N: H-C-

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**Question:** What is the correct Lewis structure of hydrogen cyanide, HCN?

**Options:**

1. **Option 1:**
   
   - Structure: H—C≡N with two lone pairs of electrons on the nitrogen atom.

2. **Option 2:**
   
   - Structure: H—C—N with a double bond between carbon and nitrogen.

3. **Option 3:**
   
   - Structure: H—C≡N with no lone pairs shown on the nitrogen atom.

4. **Option 4:**
   
   - Structure: H—C≡N with two lone pairs of electrons on both carbon and nitrogen atoms.

**Explanation:**

- In the correct Lewis structure of hydrogen cyanide (HCN), hydrogen (H) is single-bonded to carbon (C), which is triple-bonded to nitrogen (N). Additionally, nitrogen should have one lone pair of electrons, satisfying the octet rule. Thus, Option 1 represents the correct structure.
Transcribed Image Text:**Question:** What is the correct Lewis structure of hydrogen cyanide, HCN? **Options:** 1. **Option 1:** - Structure: H—C≡N with two lone pairs of electrons on the nitrogen atom. 2. **Option 2:** - Structure: H—C—N with a double bond between carbon and nitrogen. 3. **Option 3:** - Structure: H—C≡N with no lone pairs shown on the nitrogen atom. 4. **Option 4:** - Structure: H—C≡N with two lone pairs of electrons on both carbon and nitrogen atoms. **Explanation:** - In the correct Lewis structure of hydrogen cyanide (HCN), hydrogen (H) is single-bonded to carbon (C), which is triple-bonded to nitrogen (N). Additionally, nitrogen should have one lone pair of electrons, satisfying the octet rule. Thus, Option 1 represents the correct structure.
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