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Total number of sp-hybridised C-atoms in...

Total number of sp-hybridised C-atoms in the folowing Hydrocarbon will be :-
`H_(3)C-C-=C-CH=CH_(2)`

A

5

B

4

C

2

D

1

Text Solution

AI Generated Solution

The correct Answer is:
To determine the total number of sp-hybridized carbon atoms in the hydrocarbon `H₃C-C≡C-CH=CH₂`, we can follow these steps: ### Step 1: Identify the Structure The given hydrocarbon is `H₃C-C≡C-CH=CH₂`. This structure consists of: - A terminal methyl group (H₃C-) - A carbon-carbon triple bond (C≡C) - A carbon-carbon double bond (C=CH₂) ### Step 2: Analyze Each Carbon Atom 1. **First Carbon (C1)**: This carbon is part of the methyl group (H₃C-). It is bonded to three hydrogen atoms and one carbon atom. This carbon is **sp³ hybridized**. 2. **Second Carbon (C2)**: This carbon is bonded to the first carbon and is part of the triple bond (C≡C). Since it is involved in a triple bond, it is **sp hybridized**. 3. **Third Carbon (C3)**: This carbon is part of the triple bond (C≡C) as well. It is bonded to the second carbon and one other carbon atom (C=CH₂). This carbon is also **sp hybridized**. 4. **Fourth Carbon (C4)**: This carbon is part of the double bond (C=CH₂). It is bonded to the third carbon and two hydrogen atoms. This carbon is **sp² hybridized**. 5. **Fifth Carbon (C5)**: This carbon is a terminal carbon (CH₂). It is bonded to the fourth carbon and two hydrogen atoms. This carbon is also **sp² hybridized**. ### Step 3: Count the sp-Hybridized Carbons From our analysis: - C2 and C3 are the only sp-hybridized carbon atoms. ### Conclusion The total number of sp-hybridized carbon atoms in the given hydrocarbon `H₃C-C≡C-CH=CH₂` is **2**. ---
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