JEE Main 2024 Chemistry question

ChemistryChemical Bonding and Molecular StructureJEE Main 2024

Given below are two statements: one is labeled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): PH has lower boiling point than NH. Reason (R): In liquid state NH molecules are associated through van der Waal's forces, but PH molecules are associated through hydrogen bonding. In the light of above statements, choose the most appropriate answer from the options given below.

Answer: (C)

Solution

NH is hydrogen bonded while PH has only weak van der Waals forces, so the reason is reversed.

Question ID VK-011248