Question

Which of the following metals remains in liquid state at room temperature?

• A. Mercury
• B. Sodium
• C. Gallium
• D. Bromine

Hint:

Bromine is the only non-metal that is liquid at room temperature; Mercury is the only metal.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Most metals are solid at standard room temperature (around \(20^\circ\text{C}\) to \(25^\circ\text{C}\)).

Step 2: Detailed Explanation:
Mercury (Hg) is a unique transition metal that is distinctly liquid at normal room temperature (melting point is \(-38.83^\circ\text{C}\)).
While Gallium melts at a very low temperature (\(29.76^\circ\text{C}\)), it is solid at standard room temperature but can melt in your hand.
Sodium is a soft solid.
Bromine is a liquid, but it is a non-metal, not a metal.
Therefore, the only metal distinctly liquid at room temperature here is Mercury.

Step 3: Final Answer:
Mercury is the correct answer.