Given below are two statements: Statement I: Due to increase in van der Waals forces, the order of boiling points is CH₃ CH₂ CH₂ I > CH₃ CH₂ I > CH₃ I. Statement II: As para-dichlorobenzene is more symmetric, its melting point is higher than ortho-dichlorobenzene, however its boiling point is lower than ortho-dichlorobenzene. In the light of the above statements, choose the correct answer from the options given below

Step-by-step solution

Statement I is true because as the size of the alkyl group increases, the molecular mass and surface area increase. This leads to an increase in the magnitude of van der Waals forces, which in turn increases the boiling point. Thus, the correct order of boiling points is CH ₃ CH ₂ CH ₂ I > CH ₃ CH ₂ I > CH ₃ I . Statement II is true because para-dichlorobenzene is more symmetrical than ortho-dichlorobenzene, allowing it to pack more efficiently in the crystal lattice, which results in a higher melting point. Howeve