Technetium

Technetium is a metal having silvery grey color. This element has physical property of tarnishing in moist air. This element is similar to element called as Rhenium. Rhenium is also a silvery white element having high weight. In 1987 the scientist was discovered the technetium is a first superconductor at 11 Kelvin and above.

General Physical Properties are,

Atomic Mass Average: 98

The Phase at Room Temperature: Solid

Melting Point: 2157 oC or 2992oF

Boiling Point: 4265 oC or 8811oF

Density: 11 g cm-3

Heat of Vaporization: 585.2 kJ/mole

Heat Capacity: 25oC

Electric Conductivity: 0.067 106/cm Ω

Thermal Conductivity: 0.506 W/cm K

Molar Volume: 8.51 cm3/mole

Physical State (at 20°C & 1atm): Solid

Vapor Pressure = 0.0229 Pa @ 2200°C