Which of the following non-metals is liquid at room temperature?
Correct Answer: Bromine (Br)
Subject: chemistry
- Mercury (Hg)
- Bromine (Br)
- Francium (Fr)
- Gallium (Ga)
Explanation: • <b>Key Fact</b>
Bromine is the only liquid non-metal at room temperature.
• <b>Supporting Detail</b>
Mercury is a liquid metal, not a non-metal.
• <b>Related Concept</b>
Gallium and Caesium are metals that liquefy just above room temperature.
• <b>Why wrong options are wrong</b>
Carefully reading "non-metal" eliminates Mercury and Gallium.
• <b>Exam Trick</b>
Br = "Bro, it's liquid and non-metal!".
• <b>Additional Info</b>
Bromine belongs to Group 17 (Halogens).