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Question

How many sigma bonds are present in the molecule of dicyanoethene (CN-CH=CH-CN)?


A

2 sigma bonds

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B

3 sigma bonds

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C

5 sigma bonds

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D

7sigma bonds

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Solution

The correct option is D

7sigma bonds


The explanation for the correct option:

Option (D): 7

  1. The sigma bond is the strongest covalent link formed by the head-on overlapping atomic orbitals.
  2. Sigma bonds are found in alkanes, alkenes, and alkynes.
  3. A double is composed of one sigma and one pi bond.
  4. A triple bond is composed of one sigma bond and two pi bonds.
  5. The structure of dicyanoethene is NC-CH=CH-CN
  6. We can see that there are 7 sigma bonds present inCN-CH=CH-CN.

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