Question

Why in case of haloalkane the boiling and melting point decrease with increase in branchings.

Answer 1

In case of haloalkane the boiling and melting point decrease with increase in branchings because:


1.)As the branches increase the compactness of the molecule increases , this means that the structure of the compound is changing
2.)The forces between the molecule changes resulting in the gradual decrease of the boiling and melting point 
3.)The Vanderwaal forces increase as the mass of the halogen atom increases
4.)RI > RBr > RCl > RF  this is the order of the increasing halogen mass and the decrease in boiling point with increase in the branching of the compound

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