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MAGNESIUM
Magnesium is a silvery reactive element belonging to the group II of the periodic table. It is characterised by

Atomic number 12

Relative atomic mass 24.321

Relative density 1.74

Melting point 651OC

Boiling point 1107OC

OCCURRENCE
Magnesium basically occurs in minerals, as magnesite(MgCO3), dolomite(MgCl2.KCl.6H2O) and dolomite (MgCO3.CaCO3).
EXTRACTION
Magnesium is prepared by the electrolysis of fused magnesium chloride
MgCl2 è Mg2+ […]

POTASSIUM

Potassium is a soft silvery reactive element belonging to the group I of the periodic table. It is characterised by

 
Atomic number 19
 
Relative atomic mass 39.098
 
Relative density 0.87
 
Melting point 63.7OC
 
Boiling point 774OC

OCCURRENCE

Potassium basically occurs in minerals, as sylvine (KCl), Carnalite (KCl.MgCl2.6H2O) and salt petre (KNO3)

EXTRACTION
Potassium is usually prepared by the action of heat […]

SODIUM

Sodium is a soft silvery reactive element belonging to the group I of the periodic table. It is characterised by

 
Atomic number 11
 
Relative atomic mass 22.9898
 
Relative density 0.97
 
Melting point 97.5OC
 
Boiling point 892OC

OCCURRENCE

Sodium basically occurs as NaCl in sea water, lakes and rocks. It also occurs as Chile saltpetre (NaNO2).

EXTRACTION
DOWN’S PROCESS
Sodium is mainly […]