Question

Given below are two statements:

Statement I: The boiling point of hydrides of Group 16 elements follows the order:

H₂O > H₂Te > H₂Se > H₂S

Statement II: On the basis of molecular mass, H₂O is expected to have a lower boiling point than the other members of the group but due to the presence of extensive H-bonding in H₂O, it has a higher boiling point.

In the light of the above statements, choose the correct answer from the options given below:

विकल्प

• Statement I is true, but Statement II is false.

• Statement I is false, but Statement II is true.

• Both Statement I and Statement II are true.

• Both Statement I and Statement II are false.

Answer 1

Both Statement I and Statement II are true.

Explanation:

The boiling point increases as the molecular mass increases. However, water contains intermolecular hydrogen bonding, which is absent in other molecules. Therefore, H₂O has a higher boiling point than other substances.

Hence, both the statements are correct.