Multiple choice general knowledge science & technology

Which one of the following is solid at room temperature?

  1. Fluorine

  2. Iodine

  3. Chlorine

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

At room temperature (25°C): Fluorine and Chlorine are gases, Bromine is a liquid (the only liquid nonmetal at STP), and Iodine is a solid that sublimes (goes directly from solid to gas). Iodine's higher atomic mass and stronger van der Waals forces between its diatomic molecules (I2) allow it to exist as solid crystals.

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