CHLORINE - CL

PROPERTIES

• Electronegativity according to Pauling 3.0
• Density 3.21*10 -3 g.cm -3 at 20 °C
• Melting point -101 °C
• Boiling point -34.6 °C
• Vanderwaals radius 0.127 nm

PROPERTIES

• Ionic radius 0.184 (-2) nm ; 0.029 nm (+6)
• Isotopes 4
• Electronic shell [Ne] 3s23p5
• Energy of first ionisation 1255.7 kJ.mol -1
• Energy of second ionisation 2298 kJ.mol -1

PROPERTIES

• Energy of third ionisation 3822 kJ.mol -1
• Standard potential - 1.36 V
• Atomic number 17
• Atomic mass 35.453 g.mol -1
• Discovered by Carl Wilhelm Scheele in 1774

Uses:
-production of safe drinking water the world over. Even the smallest water supplies are now usually chlorinated

extensively used in the production of paper products, dye stuffs, textiles, petroleum products, medicines, antiseptics, insecticides, foodstuffs, solvents, paints, plastics, and many other consumer products

most chlorine is used in the manufacture of chlorinated cleaning compounds, pulp bleaching, disinfectants, and textile processing

-used for the extraction of bromine
-PVC pipe used to provide safe drinking water
-manufacture of chlorates, chloroform, carbon tetrachloride