Ta₂O₅

Ta₂O₅、Nb₂O₅、 Sn，

Tantalum (Ta) and Niobium (Nb) are all rare metals with high melting point (tantalum 2996℃, niobium 2468℃) and high boiling point (tantalum 5427℃, niobium 5127℃). Their appearance is like steel, gray luster, and dark gray powder. They have advanced characteristics of suction, corrosion resistance, superconductivity, unipolar conductivity and strength at high temperature.  Tin (Sn) is malleable at room temperature.  Especially at 100℃, it is very malleable and can develop into very thin tin foil.  Usually, people will use tin foil packaging cigarettes, candy, to prevent dampness  

Applications: Tantalum (Ta) niobium (Nb) is widely used in electronics, fine ceramics and fine glass industries.  Electro-acoustic and optical equipment;  Cemented carbide, aerospace and electronic energy industries;  Biomedical engineering;  Superconducting industry;  Special steel industry;  Tin (Sn) is mainly used to make alloys.