Pd(Atomic number : 46)

1. Introduce – A member of the platinum group and a metal with excellent ductility and electrical properties – It has the lowest melting point (1552℃) and density (12g/㎤) among the platinum group elements and the greatest chemical reactivity – Does not oxidize at room temperature, but only reacts with oxygen at high temperatures above 800℃ to form palladium oxide – It absorbs more than 900 times its volume of hydrogen at room temperature and is used in hydrogen storage alloys→ Pd : Since the activation energy of hydrogen molecule dissociation reaction is low compared to...