Question:

mistry Course Home <Chapter 8 lb 5 of 12 Question 5 A Review | Constants 1 Periodic Table Part A Learning Goal: To understand wh

mistry
Course Home
<Chapter 8
lb
5 of 12
Question 5
A Review | Constants 1 Periodic Table
Part A
Learning Goal:
To understand what resonance means and when it
occurs.
Which choice represents a pair of resonance structures?
View Available Hint(s)
Three resonance structures can be drawn for
NO3 (see the figure) because it is possible to
have the doute bond on any of the three oxygen
atoms. (Figure 1)
Here the total number of valence electrons in
NO3 is 24 (5 valence electrons from nitrogen, 18
electrons from 3 oxygen atoms, and 1 electron from
the single negative charge present in the molecule).
All these resonance structures have 24 valence
electrons.
:C=0 and :F-F:
:CI--H and : 01–0:-
:Ö=N-C1: and
nd: N=0–01:
:Ö-Ñ=Ö: and: Ö=-:
:
Which one is correct? Experiments show that all
three bonds in nitrate have the same length. This
indicates that the electrons of the double bond have
become delocalized, or spread out over all three
oxygen atoms. Therefore, each oxygen atom forms
one and one-third bonds. The actual structure is an
average of all three resonance structures, as
shown in the second figure. (Figure 2)
Submit
Part B
can be drawn for ozone. O2?

mistry Course Home <Chapter 8 lb 5 of 12 Question 5 A Review | Constants 1 Periodic Table Part A Learning Goal: To understand what resonance means and when it occurs. Which choice represents a pair of resonance structures? View Available Hint(s) Three resonance structures can be drawn for NO3 (see the figure) because it is possible to have the doute bond on any of the three oxygen atoms. (Figure 1) Here the total number of valence electrons in NO3 is 24 (5 valence electrons from nitrogen, 18 electrons from 3 oxygen atoms, and 1 electron from the single negative charge present in the molecule). All these resonance structures have 24 valence electrons. :C=0 and :F-F: :CI--H and : 01–0:- :Ö=N-C1: and nd: N=0–01: :Ö-Ñ=Ö: and: Ö=-: : Which one is correct? Experiments show that all three bonds in nitrate have the same length. This indicates that the electrons of the double bond have become delocalized, or spread out over all three oxygen atoms. Therefore, each oxygen atom forms one and one-third bonds. The actual structure is an average of all three resonance structures, as shown in the second figure. (Figure 2) Submit Part B can be drawn for ozone. O2?