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السؤال 56

Which statement applies to helium, neon, argon, krypton, xenon, and radon at 25 degrees Celsius and 1 atmosphere?

  1. Only the three lightest members are gases.
  2. All members are solids because they are elements.
  3. Every listed member is a gas.الإجابة الصحيحة
  4. The heavier members must be liquids.

الشرح

All six listed noble gases are gaseous at the stated conditions. Greater atomic mass within the family does not by itself force the heavier members to become liquid or solid at room temperature.

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السؤال 56: Which statement applies to helium, neon, argon, krypton,… · The Periodic Table and Elements · Questena