How many sigma and pi bonds are present in a molecule of cumulene?

Answer 1

#7sigma + 3pi#

This is a molecule of cumulene, #C_4H_4#.

Single bonds are one #sigma#-bond, while double bonds are one #sigma# and one #pi#-bond.

#sigma# and #pi#-bonds are just ways in which electron orbitals interact to form bonds - #sigma# are stronger bonds, but you can't have more than one between the same two atoms.

Cumulene has three double bonds and four single bonds, or,

#3(sigma + pi) + 4sigma = 7sigma + 3pi#

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Answer 2

In a molecule of cumulene, each carbon atom is connected to two adjacent carbon atoms by alternating single and triple bonds. Therefore, each carbon-carbon bond consists of one sigma bond and two pi bonds. Since each carbon atom is bonded to two others, there are 2 sigma bonds and 4 pi bonds in a molecule of cumulene.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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