5. Consider the molecule below. What is the bond order of Bond A? [Input format

Question

5.

Consider the molecule below. What is the bond order of Bond A? [Input format a whole number (1,2, etc) or simplist improper fraction (4/3, 5/3, etc). Reduce 9/6 to 3/2.] What is the bond order of Bond B? [Input format a whole number (1,2, etc) or simplist improper fraction (4/3, 5/3, etc). Reduce 9/6 to 3/2.] What is the bond order of Bond C? [Input format a whole number (1,2) or simplist improper fraction (4/3, 5/3, etc). Reduce 9/6 to 3/2.] Which bond(s) is/are the longest? [Input format for single letter: A,B,C or D. If two letters are needed, input in alphabetical order separated by a comma: A,C.] Which bond(s) is/are the strongest? Input format for single letter: A,B,C or D. If two letters are needed, input in alphabetical order separated by a comma: A,C.]

Explanation / Answer

Bond A and bond B is the bond between 2 Carbon atom in a ring which is in resonance
Total number of bond in the ring = 6 sigma +3pi = 9bonds
These 9bonds are chared between 6 carbon atoms
So,bond order = 9/6= 3/2

a)
Answer: 3/2

b)
Answer: 3/2

c)
Bond C is a normal single bond. No resonance involved
So bond oreder will be 1
Answer: 1

d)
C is a single bond
D is a double bond
A and B are partial double bond due to rsonance
Single bonds are always longest

Answer: C

e)
C is a single bond
D is a double bond
A and B are partial double bond due to rsonance
Double bonds are strongest

Answer: D

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