Chapter 16.2, Problem 3CC

Interpretation Introduction

Interpretation:

The three $\text{C-C}$ bonds of 1-butene in terms of bond length should be ranked.

Concept introduction:

The bond length between atoms is depending upon the hybridization state of atoms.

The increasing order of bond length is,

$\text{sp}\text{-sp}\text{<}{\text{sp}}^{\text{2}}{\text{-sp}}^{\text{2}}\text{<}{\text{sp}}^{\text{3}}{\text{-sp}}^{\text{3}}$

The s-orbitals in an atom are more close to nucleus. Therefore, the hybridized orbitals having the more s-character will bond strongly and the bond length should be short.

To rank: the three $\text{C-C}$ bonds of 1-butene in terms of bond length (from shortest to longest).