Answer:
<u>Bond energy of</u> (A) C≡C > (B) C=C
<u>and, </u>(C) C=N > (D) C-N
Explanation:
Bond energy refers to the amount of energy required to break a bond or the energy released when a bond is formed. Bond energy of a covalent bond suggests the bond strength of the chemical bond and depends on the <u>bond length and bond order of the chemical bond. </u>
<u>The bond energy of a chemical bond increases with the bond order and decreases with the bond length</u>. As, length of a bond decreases with increase in the bond order.
First pair: (A) C≡C (B) C=C
The bond order of C≡C - 3, the bond order of C=C - 2
Since the bond order: C≡C > C=C
Bond length: C≡C < C=C
<u>Therefore, bond energy of (A) C≡C > (B) C=C</u>
Second pair: (C) C=N (D) C-N
The bond order of C=N - 2, the bond order of C-N - 1
Since the bond order: C=N > C-N
Bond length: C=N < C-N
<u>Therefore, bond energy of (C) C=N > (D) C-N</u>
