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Remember there are many forms of cumulene.

In a cumulene that forms like this H2C=C=C=C=CH2 there are 7 sigma bonds and 3 pi.

When there is a double bond ( = ) one is always a sigma bond the other is pi, single bonds are sigma.

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14y ago
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9y ago

There are 7 sigma bonds, 3 pi bonds in Cumulene.

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10y ago

we have 15 sigma (8 C-C & 7 C-H) and 3 pi bonds.

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11y ago

6 sigma bonds, 2 pi bonds.

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12y ago

4

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8y ago

7,3

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Q: How many σ and π bonds are present in a molecule of cumulene?
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