Re(Atomic number : 75)

1. Introduce – Refractory metal mostly used as a material to make superalloys that can withstand high temperatures – Possesses the properties of being both malleable and ductile, with ductility improving upon heating and cooling – Metal with a high melting point (3186℃) and boiling point (5596℃) – Rhenium alloys can be utilized as superconductors at extremely low temperatures – Chemical reactivity is relatively small compared to other metals, so it does not oxidize well in the air, and the surface oxidizes and discolors at a slow rate in a humid atmosphere (powder...