Q 1.9 Identify the primary reason why the boiling points of successive members of a straight-chain alkane homologous series increase. []
a. A The strength of London dispersion forces increases due to greater molecular surface area and polarizability.
b. B The strength of covalent bonds between carbon and hydrogen atoms increases as the chain lengthens.
c. C The molecules become more polar, leading to stronger dipole-dipole interactions between chains.
d. D The mass of the molecules increases, inherently requiring more kinetic energy to overcome inertia during vaporization.