Name: tungsten
Symbol: W
Atomic number: 74
Atomic weight: 183.84 (1)
Group in periodic table: 6
Group name:
Period in periodic table: 6
Block in periodic table: d-block
CAS registry ID: 7440-33-7
Pure tungsten is a steel-gray to tin-white metal. Tungsten has the highest melting point and lowest vapour pressure of all metals, and at temperatures over 1650°C has the highest tensile strength. The metal oxidises in air and must be protected at elevated temperatures. It has excellent corrosion resistance and is attacked only slightly by most mineral acids.