Multiple choice general knowledge science & technology

Which element never solidify ?

  1. Nitrogen

  2. Helium

  3. Argon

  4. Stroncium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Helium is the only element that never solidifies at atmospheric pressure, even at absolute zero. It remains liquid unless pressure above 25 atmospheres is applied. Nitrogen and argon can solidify at low temperatures, and stroncium (misspelled - should be strontium) is a solid metal at room temperature.

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