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NEET · Chemistry · STD 12 - p -Block elements - ll

Given below are two statements: Statement \(I\): The boiling point of hydrides of Group \(16\) elements follow the order \(\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{Te}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{~S}\). Statement \(II\): On the basis of molecular mass, \(\mathrm{H}_2 \mathrm{O}\) is expected to have lower boiling point than the othe members of the group but due to the presence of extensive \(\mathrm{H}\)-bonding in \(\mathrm{H}_2 \mathrm{O}\), it has 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
Verified Solution

Answer & Solution

Correct Answer

(D) Both Statement \(I\) and Statement \(II\) are true

Step-by-step Solution

Detailed explanation

Statement \(I\) is correct, because boiling point of hydrides of group \(16\) follows the order \(\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{Te}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{~S}\) .