Which are the only two elements on the periodic table that are liquid at room temperature?
Correct answer: A. Mercury and Bromine
- A. Mercury and Bromine
- B. Carbon and helium
- C. Nitrogen and Hydrogen
- D. Oxygen and Neon
Explanation
Mercury and bromine remain liquid near ordinary room temperature, unlike most elements, which are solid or gaseous. Bromine is the only nonmetal among the two.
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