Bond Lengths and Angles 1.33 54 H 116.6° 121.7 ethylene ethane Hybrid orbitals have more s character. Pi overlap brings carbon atoms closer. Bond angle with pi orbital increases. >Angle C=C-His121.7° >Angle H-C-His116.6° => Chapter 7 5 Chapter 7 5 Bond Lengths and Angles • Hybrid orbitals have more s character. • Pi overlap brings carbon atoms closer. • Bond angle with pi orbital increases. ➢Angle C=C-H is 121.7 ➢Angle H-C-H is 116. 6 =>