Multiple choice

Which of the following is a non-metal that remains liquid in room temperature?

  1. Bromine

  2. Chlorine

  3. Helium

  4. Phosphorus
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A Correct answer
Explanation

Bromine is the only non-metal that exists as a liquid at room temperature (25°C). It's a dense, reddish-brown liquid that evaporates easily to form a red vapor. Chlorine is a gas, helium is a noble gas, and phosphorus is a solid (white phosphorus is waxy, red phosphorus is powdery).

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