A) \[{{C}_{2}}{{H}_{6}}\]
B) \[{{C}_{2}}{{H}_{2}}\]
C) \[{{C}_{2}}{{H}_{4}}\]
D) \[{{C}_{2}}{{H}_{2}}B{{r}_{2}}\]
Correct Answer: B
Solution :
\[C-H\] bond length is very smallest in \[{{C}_{2}}{{H}_{2}}\].
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