Here you can read more about the chemical element Chlorine. Its shemical symbol is Cl and its atomic number is 17. The relative atomic mass of Chlorine is 35.453 u. The elemental classification of Chlorine is Diatomic nonmetals, and it belongs to group 17 and period 3 in the Periodic Table of Elements.
The density of Chlorine is 3.214 kg/m3. The melting point of Chlorine is 171.6 Kelvin (-101.4 ℃). The boiling point of Chlorine is 239.1 Kelvin (-33.9 ℃). Chlorine was discovered in the year 1774 by Carl Wilhelm Scheele.
To the right (or below if you are using a mobile device with a smaller screen) you will find the information given above for the element Chlorine ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.