Which of the following metals is a liquid at room temperature?

Which of the following metals is a liquid at room temperature?

1. A. Sodium
2. B. Calcium
3. C. Mercury
4. D. Lithium

Answer: C. Mercury

Mercury is a liquid at room temperature.

Here’s why:

• Sodium (Na): Melting point 97.72 °C, solid at room temperature.
• Calcium (Ca): Melting point 842 °C, solid at room temperature.
• Mercury (Hg): Melting point -38.8 °C, liquid at room temperature.
• Lithium (Li): Melting point 180.54 °C, solid at room temperature.

Therefore, the only metal that is liquid at room temperature is Mercury (Hg).