1.

The C - C bond length of the following molecules is in the order [IIT-JEE 1991]

A. \[{{C}_{2}}{{H}_{6}}>{{C}_{2}}{{H}_{4}}>{{C}_{6}}{{H}_{6}}>{{C}_{2}}{{H}_{2}}\]
B. \[{{C}_{2}}{{H}_{2}}<{{C}_{2}}{{H}_{4}}<{{C}_{6}}{{H}_{6}}<{{C}_{2}}{{H}_{6}}\]
C. \[{{C}_{2}}{{H}_{6}}>{{C}_{2}}{{H}_{2}}>{{C}_{6}}{{H}_{6}}>{{C}_{2}}{{H}_{4}}\]
D. \[{{C}_{2}}{{H}_{4}}>{{C}_{2}}{{H}_{6}}>{{C}_{2}}{{H}_{2}}>{{C}_{6}}{{H}_{6}}\]
Answer» C. \[{{C}_{2}}{{H}_{6}}>{{C}_{2}}{{H}_{2}}>{{C}_{6}}{{H}_{6}}>{{C}_{2}}{{H}_{4}}\]


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