how many sigma bonds or pi bonds are used to join the 3 carbon atoms in this allene structure H2C=C=CH2
Question
How many sigma bonds or pi bonds are used to join the 3 carbon atoms in this allene structure H2C=C=CH2?
Solution
In the allene structure H2C=C=CH2, there are 5 sigma bonds and 2 pi bonds. Here's how:
-
Each single bond is a sigma bond. So, the bonds between the terminal carbons (C) and the hydrogens (H) are sigma bonds. There are 4 of these (2 on each end).
-
The bond between the central carbon and each of the terminal carbons is also a sigma bond. There are 2 of these.
-
Each double bond is composed of one sigma bond and one pi bond. In the allene structure, there are two double bonds, so there are 2 pi bonds.
So, in total, there are 5 sigma bonds (4 C-H and 1 C-C) and 2 pi bonds (in the C=C double bonds).
Similar Questions
How many bonds can one carbon atom form?A.TwoB.OneC.FourD.ThreeSUBMITarrow_backPREVIOUS
A central atom in a molecule has two lone pairs of electrons and forms three single bonds. The shape of this molecule is:
The number of electron pairs shared by the two carbon atoms which are bonded by a triple bond are.A Three B Four C Five D Six
A sigma bond is formed by the overlapping of :A s-s orbital alone B s and p orbitals alone C s-s, s-p or p-p orbitals along internuclear axis D None of these
Which of the following molecules can form hydrogen bonds in its molecules ? I. CH3I II. CH3NH2 III. CH3OH
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.