Some metals are more like liquids. A chip of gallium or cesium melts on your palm, because the melting point of these metals is just below thirty degrees Celsius (86°F). Francium, which has not been prepared as the pure metal so far, would melt at room temperature.

   Mercury is a classical example of a liquid metal which everybody knows. It freezes at minus 39°C (-38.2°F), which makes it eligible for various kinds of thermometers.

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