A) Rotation breaks the overlap of the pi orbitals which forms part of the double bond
B) The substituted groups sterically hinder each other
C) The double bond soaks up thermal energy
D) This isn't true: double C-C bonds rotate nearly as freely as single C-C bonds
E) Their configuration is locked by multiple sigma bonds formed between the two carbons

A) Bond leng ths and ang les a re fixe d an d rig id
B) Bond lengths are typically about 0.1-0.2 nm
C) Bond energies range from about 200 to 460 kj mol-1
D) Bond lengths are shorter in double bonds than single bonds
E) Bond energy is expressed as enthalpy differences

A) O and O
B) N and C
C) O and C
D) N and S
E) None of the above