How many sigma bonds are there in an ethene molecule?
Answer and explanation
Correct answer: D. 5
- Step 1: Examine the bonding structure of ethene (): there are single bonds and double bond.
- Step 2: Each single bond consists of bond ( bonds), and the double bond contains bond and bond.
- Step 3: Total number of bonds is .
Answer
5.
Why not the others: The alternative counts (7, 4, 6) arise from miscounting double bonds as single bonds or confusing sigma and pi bond contributions.
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