The properties of alkaline earth metals

1.
The nature of the element

Alkaline earth metals are silver-white, with metallic luster, good conductivity and ductility
.

Alkaline earth metals have two valence electrons, so the metal bond of alkaline earth metals is stronger than that of alkali metals
.

The reactivity of alkaline earth metals from Be to Ba metal increases in turn, and its reactivity is manifested in strong reducibility
.

3Mg+N ₂ =Mg ₃ Ne ₂

The strong reducibility of alkaline earth metals can be used to prepare precious metals or rare metals
.

Ca, Sr, and Ba in alkaline earth metals can react with H ₂ to form corresponding hydrides at high temperatures , and react with water to form hydroxides
.

Calcium , strontium , and barium react mildly with water
.

Because Be and Mg form a dense oxide protective film on the surface, they do not react with water at room temperature
.

2.

All alkaline earth metals can be prepared by electrolytically molten chloride

Metal beryllium can be produced by electrolytic melting of BeCl ₂ , and NaCl or CaCl ₂ needs to be added during the production process to increase the conductivity of the molten salt

Metal beryllium can also be prepared by thermal reduction method, usually by reducing BeF2 with magnesium metal at high temperature