Problem: Draw the Lewis structure for the molecule C3H4. How many sigma and pi bonds does it contain?a) 8 sigma, 2 pib) 10 sigma, 2 pic) 6 sigma, 2 pid) 8 sigma, 0 pie0 7 sigma, 0 pi

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We’re being asked to determine the number of σ and π bonds in C3H4


Carbon is the internal atom

  • H → can not be a central atom


          Group            Valence Electrons

C         4A                   3 × 4 e12 e

H         1A                   4 × 1 e4 e

         Total:  18 valence e

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Problem Details

Draw the Lewis structure for the molecule C3H4. How many sigma and pi bonds does it contain?

a) 8 sigma, 2 pi

b) 10 sigma, 2 pi

c) 6 sigma, 2 pi

d) 8 sigma, 0 pi

e0 7 sigma, 0 pi

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Valence Shell Electron Pair Repulsion Theory concept. You can view video lessons to learn Valence Shell Electron Pair Repulsion Theory. Or if you need more Valence Shell Electron Pair Repulsion Theory practice, you can also practice Valence Shell Electron Pair Repulsion Theory practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Bakshandeh's class at Los Angeles Pierce College.