Question

chem_001a_001_25f - general chemistry
methyl cyanoacrylate is the main component of many glues. its lewis structure is shown below.
bond 1
h
c
n:
h
h
atom 1
h
c
c
c
o
c
h
h
h
h
atom 2
atom 1 is sp³ hybridized and atom 2 is sp² hybridized.
bond 1 consists of 1 sigma bonds and 2 pi bonds.
this molecule has a total of sigma bonds and 4 pi bonds.

Explanation:

Step1: Count single bonds

Each single bond is a sigma bond.

Step2: Count double and triple bonds

A double bond has 1 sigma and 1 pi bond. A triple bond has 1 sigma and 2 pi bonds.

Step3: Calculate total sigma bonds

Count all single bonds and add 1 for each double/triple bond (for the sigma part).

• Single bonds: \(12\) (count each single line in the structure)
• Double bonds: \(2\) (each contributes 1 sigma)
• Triple bond: \(1\) (contributes 1 sigma)

Total sigma bonds \(=12 + 2+1=16\)

Answer:

\(16\)