Question

The single covalent bond energy of carbon with $A,B,C$ and $D$ atoms are $240,380,270,480$ kcal mol${}^{-1}$. Thus, the smallest atom among $A,B,C$ and $D$ is:

• A. $A$
• B. $B$
• C. $C$
• D. $D$

Answer 1

The correct option is D $D$

The single covalent bond energy of carbon with $A,B,C$ and $D$ atoms are $240,380,270,480$ $kcalmo{l}^{-1}$. Thus smallest atom among $A,B,C$ and $D$ is $D$.

Smaller is an atom, more is bond energy.