Zinc
Zinc
Symbol : Zn,
Atomic Number — 30,
Mass Number — 65
Physical and Chemical Properties :
This is a bluish white, hard, and brittle metallic substance. At a normal temperature, it is neither malleable nor ductile. It is a good conductor of heat and electricity.
» The melting point, boiling point, and specific density of the zinc are 419.5°C, 907°C, and 7.1 kg/dm3 respectively.
Uses of Zinc :
This is used in the laboratory in the preparation of H2 gas; it is also used in the galvanization of iron sheets to protect iron from rusting, buckets, boxes, and many household articles are made from these sheets.
Compounds of Zinc
Zinc Sulphate (ZnSO4) :
This is used in textile industry for soaking cotton threads before spinning, in making preserver of wood and hides, in manufacturing of lithopone white pigment, and in Calico printing and dyes industries.
Zinc Sulphide (ZnS) :
This occurs in nature in the form of zinc blende. It is a white solid that is insoluble in water. This exhibits the virtue of phosphorescence, and, therefore, it is used in making phosphorescent screens.
Zinc Chloride (ZnCl4) :
Anhydrated zinc chloride compound acts as a water absorber. The electroplating of ZnCl4 is done to protect the costly wooden furniture’s from germs or insects.