NEET2024Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual
Given below are two statements: Statement I: The boiling point of hydrides of Group 16 elements follow the order H ₂ O H ₂ Te H ₂ Se H ₂ ~S . Statement II: On the basis of molecular mass, H ₂ O is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in H ₂ O , it has higher boiling point. In the light of the above statements, choose the correct answe
Options
- ABoth Statement I and Statement II are false
- BStatement I is true but Statement II is false
- CStatement I is false but Statement II is true
- DBoth Statement I and Statement II are true
Correct answer
D. Both Statement I and Statement II are true
Step-by-step solution
Statement I is correct, because boiling point of hydrides of group 16 follows the order H ₂ O H ₂ Te H ₂ Se H ₂ ~S . Statement II due to intermolecular H -bonding H ₂ O shows higher boiling point than respective hydrides of group 16. (Both Statement are true) Order from H ₂ Te to H ₂ ~S is due to decreasing molar mass.