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Physical properties: Which of the following metals is liquid under normal room conditions? Consider ambient temperature and standard pressure. Choose the correct metal.

Difficulty: Easy

Radium
Zinc
Uranium
Mercury

Correct Answer: Mercury

Explanation:

Given data

Condition: ~25 °C, 1 atm.

Concept/Approach
Only two elemental substances are liquid near room temperature: mercury (metal) and bromine (non-metal). Among the listed metals, mercury is the only one liquid at room temperature.

Final Answer
Mercury

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