To estimate the bond length of a carbon-carbon triple bond, we can use the concept of bond order. Bond order is the number of chemical bonds between a pair of atoms. In a carbon-carbon double bond, the bond order is 2, and in a carbon-carbon triple bond, the bond order is 3.The bond length decreases as the bond order increases because more electrons are shared between the two atoms, leading to a stronger attraction and shorter distance between the nuclei.The carbon-carbon single bond length is approximately 1.54 . Using this information, we can estimate the bond length of a carbon-carbon triple bond by comparing the bond lengths of single and double bonds.The difference in bond length between a single bond 1.54 and a double bond 1.33 is 0.21 . Assuming a similar decrease in bond length for the triple bond, we can subtract this difference from the double bond length:1.33 double bond length - 0.21 difference 1.12 Therefore, the approximate bond length of a carbon-carbon triple bond in a molecule with a linear geometry is around 1.12 .