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easyMCQNEET 20212026Chemistry
1 mark

Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.

  1. A
    Noble gases have weak dispersion forces
  2. B
    Noble gases have large positive values of electron gain enthalpy
  3. C
    Noble gases are sparingly soluble in water
  4. D
    Noble gases have very high melting and boiling points

Solution & Step-by-step Explanation

1. Noble gases have stable closed-shell configurations, leading to weak interatomic dispersion (London) forces.2. Because of stability, adding an electron is highly unfavorable (positive electron gain enthalpy).3. Incorrect statement: Noble gases have very low melting and boiling points due to the weak nature of the interatomic forces. Helium has the lowest boiling point of any known substance.

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Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
A
Noble gases have weak dispersion forces
B
Noble gases have large positive values of electron gain enthalpy
C
Noble gases are sparingly soluble in water
D
Noble gases have very high melting and boiling points

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