question_answer

The table shown below gives the bond dissociation energies \[({{E}_{diss}})\] for single covalent bonds of carbon  atoms with element \[A,\,\,B,\,\,C\]and \[D.\] Which element has the smallest atoms                [CBSE PMT 1994]

Bond	\[{{E}_{diss}}\,(kJ\,\,mo{{l}^{-1}})\]
\[C-A\]	240
\[C-B\]	328
\[C-C\]	276
\[C-D\]	485

A)                 A            

B)                 B

C)                 C            

D)                 D