Figure 1 Shown Below Is the Structure of Caffeine in the Centre

question 56

Multiple Choice

Figure 1
Shown below is the structure of caffeine in the centre and two different resonance states I and II with lone pairs and formal charges omitted.
-Referring to Figure 1,what is the formal charge of the nitrogen atom at E?

• A)-1
• B)0
• C)+1
• D)+2

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