Q20 / 90 · JEE Main 2024 (31 Jan Shift 1) · Chemistry

Give below are two statements:

Statement-I : Noble gases have very high boiling points.

Statement-II: Noble gases are monoatomic gases. They are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boiling points.

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

  • A
    Statement I is false but Statement II is true
  • B
    Both Statement I and Statement II are true
  • C
    Statement I is true but Statement II is false
  • Correct answer
    D
    Both Statement I and Statement II are false

Solution

As noble gases do not form compounds, hence they cannot occur in the form of diatomic molecules. 

Noble gases, being monoatomic, have no interatomic forces except weak dispersion forces and therefore, they are liquefied at very low temperatures. Hence, they have low boiling points.

Noble gases are held together by weak dispersion forces.

Statement I and II are False

Hence, the correct answer is option: 'D'.

Relevant Questions