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

Answer 1

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.

Answer 2

In a molecule of cumulene, each carbon atom is sp2 hybridized, giving rise to one σ bond between each pair of adjacent carbon atoms. Additionally, there are two π bonds in cumulenes, one above and one below the plane of the molecule due to the consecutive double bonds.

Answer 3

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

Answer 4

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

Answer 5

6 sigma bonds, 2 pi bonds.

Answer 6

4

Answer 7

7,3