Sigma and Pi Bonding

Which best describes the bonding in the cyanide ion (CN^-)?

• 3 (sigma) bonds

• 2 (sigma) bonds and I (pi) bond

• 1 (sigma) bond and 2 (pi) bonds

• 3 (pi) bonds

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-3

Pi bonds are formed by 

• side to side overlap of s orbitals

• end to end overlap of s orbitals

• side to side overlap of p orbitals

• end to end overlap of p orbitals

Single bonds are also called _____________ and occur when the pair of shared electrons is in an area centered between two atoms.

• sigma bonds

• pi bonds

• delta bonds

Tags

C.PM.3

A multiple covalent bond consists of one sigma bond and at least one ______________________.

• pi bond

• delta bond

• epsilon bond

Tags

C.PM.3

What type of bond requires the most energy to break the bond?

• single bonds

• double bonds

• triple bonds

Tags

C.PM.3

Which type of bond is formed by the end-to-end overlap of atomic orbitals?

• Sigma bond

• Pi bond

• Delta bond

• Phi bond

In a double bond, how many sigma and pi bonds are present?

• 1 sigma bond and 1 pi bond

• 2 sigma bonds

• 1 sigma bond and 2 pi bonds

• 2 pi bonds

What is the primary difference between sigma and pi bonds in terms of electron density?

• Sigma bonds have electron density along the axis connecting two nuclei, while pi bonds have electron density above and below this axis.

• Sigma bonds have electron density above and below the axis connecting two nuclei, while pi bonds have electron density along this axis.

• Both have electron density along the axis connecting two nuclei.

• Both have electron density above and below the axis connecting two nuclei.

Which of the following statements is true about pi bonds?

• Pi bonds are stronger than sigma bonds.

• Pi bonds are formed by the side-to-side overlap of p orbitals.

• Pi bonds can exist independently without sigma bonds.

• Pi bonds are formed by the end-to-end overlap of s orbitals.

In the molecule ethylene (C2H4), how many pi bonds are present?

• 0

• 1

• 2

• 3