Chlorine or cl

• atomic number is 17

• atomic weight is 35.4527

• color is Yellow

• state at 298.15°k is Solid

• classification is Nonmetallic

• date of discovery is 1774

• density kg/m^3 is 3.214

• melting point is 172.31

• boiling point is 887 K

• group is Halogen

• Number of neutron is 18