A) \[{{C}_{2}}{{H}_{2}}\]
B) \[{{C}_{2}}{{H}_{4}}\]
C) \[{{C}_{2}}{{H}_{6}}\]
D) \[{{C}_{2}}{{H}_{2}}B{{r}_{2}}\]
Correct Answer: C
Solution :
The\[C-H\]bond distance is the longest in \[{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{6}}}\] because the hybrid orbitals of carbon involved in overlapping with Is orbital of hydrogen is \[s{{p}^{3}}.\]
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