Chemistry - CHEMICAL BONDING Question with Solution | TestHub

${\mathrm{C}}_2{\mathrm{H}}_2$has a triple covalent bond$(\equiv )$, which has shortest bond length.
Here$\mathrm{C}-\mathrm{C}$bond length order is
${\mathrm{C}}_2{\mathrm{H}}_6>{\mathrm{C}}_6{\mathrm{H}}_6>{\mathrm{C}}_2{\mathrm{H}}_4>{\mathrm{C}}_2{\mathrm{H}}_2$