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For questions about metals in general and their physical or chemical properties. For characteristic properties and reactions of d and f block metals specifically, use the [transition-metals] and [rare-earth-elements] tags respectively instead.
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How does caesium’s density change with temperature?
According to Wikipedia caesium’s density is $1.90\ \mathrm{g/cm^3}$ at $\Theta =20\ \mathrm{^\circ C}$. How does this change when $T$ changes? E.g. will it expand when melting?
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How does caesium’s density change with temperature?
I think I found what I was looking for on Wikipedia. They give the thermal expansion coefficient for Caesium as $97 µm\cdot m^{−1}\cdot K^{−1}$.