Calcium

Atomic number : 20 Atomic mass : 40.08 g.mol-1 Electronegativity according to Pauling : 1.0 Density : 1.6 g.cm-3 at 20 °C Melting point : 840 °C Boiling point : 1484 °C Vanderwaals radius : 0.197 nm Ionic radius : 0.099 nm Isotopes : 10 Electronic shell : [Ar] 4s2...

Potassium

Atomic number : 20 Atomic mass : 40.08 g.mol-1 Electronegativity according to Pauling : 1.0 Density : 1.6 g.cm-3 at 20 °C Melting point : 840 °C Boiling point : 1484 °C Vanderwaals radius : 0.197 nm Ionic radius : 0.099 (-1) nm Isotopes : 10 Electronic shell : [Ar]...

Argon

Atomic number : 18 Atomic mass : 39.948 g.mol-1 Electronegativity according to Pauling : unknown Density : 1.78*10-3 g.cm-3 at 20 °C Melting point : - 189 °C Boiling point : - 185.7 °C Vanderwaals radius : 0.192 nm Ionic radius : unknown Isotopes : 6 Electronic shell...

Chlorine

Atomic number : 17 Atomic mass : 35.435 g.mol-1 Electronegativity according to Pauling : 3.0 Density : 3.21.8*10*3g.cm3 at 20 °C Melting point : -101 °C Boiling point : -34.6 °C Vanderwaals radius : 0.127 nm Ionic radius : 0.184 nm (-2) ; 0.029 (+6) Isotopes : 4...

Sulphur

Atomic number : 16 Atomic mass : 32.06 g.mol-1 Electronegativity according to Pauling : 2.5 Density : 2.07 g.cm-3 at 20 °C Melting point : 113 °C Boiling point : 445 °C Vanderwaals radius : 0.127 nm Ionic radius : 0.184 nm (-2) ; 0.029 nm (+6) Isotopes : 5 Electronic...