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NEETChemistryp Block Elements (Group 15, 16, 17 & 18)

What is an unusual property of helium among the noble gases?

Options

  1. AHigh melting point
  2. BHigh density
  3. CDiffusion through common laboratory materials
  4. DHigh reactivity

Correct answer

C. Diffusion through common laboratory materials

Step-by-step solution

Helium has an unusual property of diffusing through most commonly used laboratory materials such as rubber, glass, or plastics.

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