Which of the following elements are the only two liquids on the periodic table at room temperature?

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Bromine and mercury are indeed the only two elements that exist as liquids at room temperature, which is typically defined as around 20-25 degrees Celsius. This unique property is due to their relatively low melting points compared to other elements.

Bromine is a halogen and has a melting point of about -7.2 °C, allowing it to remain in a liquid state at room temperatures. Mercury, a metal, has a melting point of approximately -38.8 °C, meaning it's liquid under standard conditions.

In contrast, hydrogen and nitrogen are gases at room temperature, while chlorine, although it can exist as a liquid at higher pressures, is also a gas at room temperature. Sodium and potassium are both solid metals that do not transition to a liquid state until they reach much higher temperatures. Thus, bromine and mercury stand out as the exceptions on the periodic table.

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