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Lesson: Sigma and Pi Bonding

Worksheet • 12 Questions

Q1:

How many πœ‹ bonds are present in N 2 ?

Q2:

How many πœ‹ bonds are present in acetylene, C H 2 2 ?

Q3:

Which of the following statements is true?

  • AElectron density in a πœ‹ bond is concentrated in lobes on either side of the internuclear axis.
  • BA πœ‹ bonding orbital can contain more electrons than a 𝜎 bonding orbital.
  • CAtoms can be linked by only one πœ‹ bond.
  • DThe bond energy of a πœ‹ bond is usually greater than that of a 𝜎 bond.
  • EA 𝜎 bond is formed by lateral overlap of atomic orbitals.

Q4:

How many πœ‹ electrons are present in benzene?

Q5:

What kind of molecular orbital forms when the two atomic orbitals shown below interact in the manner indicated?

  • A πœ‹
  • B 𝜎 βˆ—
  • C πœ‹ βˆ—
  • D 𝜎

Q6:

What kind of molecular orbital forms when the two atomic orbitals shown below interact in the manner indicated?

  • A 𝜎
  • B 𝜎 βˆ—
  • C πœ‹
  • D πœ‹ βˆ—

Q7:

Which of the following diagrams correctly illustrates the phases and orientations of the atomic orbitals giving rise to a πœ‹ βˆ— orbital?

  • A
  • B
  • C
  • D
  • E

Q8:

Which of the following represents the bonding orbital overlap in C l 2 ?

  • A
  • B
  • C
  • D
  • E

Q9:

Which of the following represents the highest energy bonding orbital of O 2 ?

  • A
  • B
  • C
  • D
  • E

Q10:

Which of the following represents the orbital overlap in H C l ?

  • A
  • B
  • C
  • D
  • E

Q11:

Which of the following represents the orbital overlap in I C l ?

  • A
  • B
  • C
  • D
  • E

Q12:

Which of the following represents the highest energy bonding orbital of N 2 ?

  • A
  • B
  • C
  • D
  • E
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