Doubt by Abhishek

sir yha order of boiling point ka arrangment kis base prr  kiya hai

HF>HI>HBR>HCL

Answers

Answer by Akashi Negi

For the same alkyl group, the boiling point of haloalkanes decreases in the order RI > RBr > RCl > RF. This is due to the increase in van der Waals forces when the size and mass of the halogen atom increases. BUT in case of H, the sizes of H and F are such(both small in size) and maximum polarity of charges that they can form intermolecular H-bonds easily and thereby resulting in maximum BP and the other compounds are in the expected order.