Resonance Structure, Sigma and Pi Bonds

Front

What is a resonance structure?

Back

A resonance structure is one of two or more valid Lewis structures for a molecule that cannot be represented accurately by a single Lewis structure. It shows the delocalization of electrons within a molecule.

Front

How many resonance structures can the acetate ion (CH3COO-) have?

Back

2

Front

What type of bond is formed by the lateral overlap of p-orbitals?

Back

Pi bond

Front

What type of bonds are present in benzene?

Back

Benzene has alternating single and double bonds, but it is often represented as having delocalized electrons, making it a resonance hybrid.

Front

What is the bond strength between sulfur (S) and oxygen (O)?

Back

1.5

Front

How many sigma and pi bonds are in a typical double bond?

Back

1 sigma bond and 1 pi bond.

Front

What is a sigma bond?

Back

A sigma bond is a type of covalent bond formed by the head-on overlap of atomic orbitals, allowing for free rotation around the bond axis.

Front

What is a pi bond?

Back

A pi bond is a type of covalent bond formed by the lateral overlap of p-orbitals, which restricts rotation around the bond axis.

Front

How many sigma and pi bonds are in a triple bond?

Back

1 sigma bond and 2 pi bonds.

Front

What is the difference between sigma and pi bonds?

Back

Sigma bonds are formed by the head-on overlap of orbitals and allow for rotation, while pi bonds are formed by the lateral overlap of p-orbitals and restrict rotation.