The specific heat of a substance is defined as the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

**The specific heat of lithium at 20°C is 3.489 J/g mol.** That means it takes 3,489 joules of heat to raise the temperature of one gram of lithium by one degree Celsius.

The specific heat of a substance can vary depending on its state (solid, liquid, or gas) and temperature. For example, the heat capacity of lithium at 25°C is 24.860 J mol 1 K. The best value for the specific heat of liquid lithium in this temperature range is 0.962 Cal/(g)(0 c).

Lithium has two important latent heat: the latent heat of fusion and the latent heat of vaporization. The latent heat of the fusion of lithium is 3 kJ/mol, which means that it takes 3 kJ of heat to melt one mole of lithium at its melting point. The latent heat of the vaporization of lithium is 145.92 kJ/mol, which means that 145.92 kJ of heat is required to vaporize one mole of lithium at its boiling point.

The heat of transition from hexagonal close-packed to body-centered cubic lithium is derived to about 14 Cal/g atom. This is an important property to consider for anyone working with lithium, as it can have a significant impact on how the material behaves under different conditions.

In summary, lithium’s specific heat is an important property to consider for anyone working with this material. The specific heat of lithium is 3.489 J/g mol at 20°C, with a latent heat of fusion of 3 kJ/mol and a latent heat of vaporization of 145.92 kJ/mol. However, specific heat can vary depending on the temperature and condition of the material, so it’s important to consider these factors as well.

**References:**

https://mmta.co.uk/metals/li/

https://www.nuclear-power.com/lithium-specific-heat-latent-heat-vaporization-fusion

https://www.cs.mcgill.ca/~rwest/wikispeedia/wpcd/wp/l/Lithium.htm

https://www.osti.gov/servlets/purl/4410151