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ChemistryNEET 2024Group 15 and 16: nitrogen, oxygen families

The p-Block Elements

Given below are two statements:

Statement I: The boiling points of the hydrides of Group 16 elements follow the order .

Statement II: On the basis of molecular mass, 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 , it has a higher boiling point.

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

  1. A.Both Statement I and Statement II are false
  2. B.Statement I is true but Statement II is false
  3. C.Statement I is false but Statement II is true
  4. D.Both Statement I and Statement II are true✓

Solution

Boiling points rise with molar mass down the group (), but water sits above all of them because of extensive hydrogen bonding. Both statements are true.

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