Q
QuestionChemistry

"Below is the Lewis structure of the acetylene (C₂H₂) molecule: H:C:::C:H Count the number of bonding pairs and the number of lone pairs around the left hydrogen atom in this molecule."
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Answer

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Step 1:
I'll solve this problem step by step, carefully following the LaTeX formatting guidelines:

Step 2:
: Analyze the Lewis Structure

The given Lewis structure shows acetylene ($$\mathrm{C}_{2}\mathrm{H}_{2}$$) with a triple bond between the carbon atoms and single bonds to the hydrogen atoms.

Step 3:
: Examine the Left Hydrogen Atom

Looking at the left hydrogen atom (H), we can see that it is directly bonded to a carbon atom with a single bond.

Step 4:
: Count Bonding Pairs

- Number of bonding pairs = $$1
- The hydrogen atom forms one single bond with the carbon atom

Step 5:
: Count Lone Pairs

- Number of lone pairs = $$0
- The hydrogen atom does not have any lone pairs

Final Answer

- Bonding pairs: 1 - Lone pairs: 0 Key Insight: In the Lewis structure of acetylene, each hydrogen atom forms a single bond with a carbon atom and has no lone pairs of electrons.