Which non-metal is a liquid at room temperature?
Answer and explanation
Correct answer: C. Bromine
- Step 1: Most non-metallic chemical elements exist as gases (such as oxygen, nitrogen, and chlorine) or solids (such as carbon, sulphur, and phosphorus) under standard room temperature and pressure.
- Step 2: Bromine (, atomic number ) is the only non-metal in the periodic table that is a liquid at room temperature (mercury is also liquid, but it is a metal).
Answer
Bromine.
Why not the others: Sodium is a solid metal, Gallium melts above room temperature at 30 °C, and Mercury is a liquid transition metal rather than a non-metal.
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