Learning Modules 25-26

Which of the following bonds is not found in acetylene (C₂H₂)?

• All of these bonds are found in C₂H₂

• σ_1s−sp

• π_2p−2p

• σ_sp-sp

A diatomic element has six bonding electrons and 2 anti-bonding electrons. What is the bond order?

• 0

• 4

• 3

• 2

Which of the following species is paramagnetic?

• C₂^-2

• He₂

• N₂

• Be₂^-2

Tags

NGSS.HS-PS1-1

Be able to identify a radical when drawing
Lewis structures. This is easy, radicals have an
odd number of electrons.

Which is NOT a radical?

• NO

• NO₂
  

• N₂O

Use B.O. to rank bond energy and length

B – B = 1
C = C = 2
N ≡ N = 3

• Energy : B-B < C=C < N ≡ N

  Length : B-B < C=C < N ≡ N

• Energy : B-B > C=C > N ≡ N

  Length : B-B > C=C > N ≡ N

• Energy : B-B < C=C < N ≡ N

  Length : B-B > C=C > N ≡ N

Tags

NGSS.HS-PS1-4

Which bond doesn't exist because it's MO = 0?

• H₂

• He₂

• N₂

Magnetism occurs when there are unpaired
electrons in orbitals. Draw the MO for O₂. Is it magnetic?

• Yes

• No