## About Iodine

Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. It is even less abundant than the so-called rare earths. It is the heaviest essential mineral nutrient.

## Iodine – Specific Heat, Latent Heat of Fusion, Latent Heat of Vaporization

**Specific heat of Iodine is ****0.214 J/g K**.

**Heat capacity** is an extensive property of matter, meaning it is proportional to the size of the system. **Heat capacity C** has the unit of energy per degree or energy per kelvin. When expressing the same phenomenon as an intensive property, the **heat capacity** is divided by the amount of substance, mass, or volume, thus the quantity is independent of the size or extent of the sample.

**Latent Heat of Fusion of Iodine is ****7.824 kJ/mol**.

**Latent Heat of Vaporization of Iodine is ****20.752 kJ/mol**.

Latent heat is the amount of heat added to or removed from a substance to produce a change in phase. This energy breaks down the intermolecular attractive forces, and also must provide the energy necessary to expand the gas (the **pΔV work**). When latent heat is added, no temperature change occurs. The enthalpy of vaporization is a function of the pressure at which that transformation takes place.

See also: Mechanical Properties of Iodine

### Summary

Element | Iodine |

Specific Heat | 0.214 J/g K |

Heat of Fusion | 7.824 kJ/mol |

Heat of Vaporization | 20.752 kJ/mol |

Density | 4.94 g/cm3 |

Source: www.luciteria.com