Multiple choice

Which of the following is liquid at room temperature?

  1. Iron

  2. Mercury

  3. Gold

  4. Aluminium

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mercury is the only metal that exists as a liquid at standard room temperature (20-25°C). This is due to its weak metallic bonding and relatively low melting point of -38.83°C. All other metals listed (iron, gold, aluminum) are solids at room temperature. Mercury's unique liquid state makes it useful in thermometers, barometers, and electrical switches, despite its toxicity.

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