摘要
从化学及冶金中的实验现象归纳出原子态贵金属的化学稳定性是按周期表位置从左到右增强 ,即Ru<Rh <Pd <Ag ,Os <Ir<Pt<Au ;但按晶态贵金属的原子化热、熔点及沸点判断 ,金属键的强度则是从左到右降低 ,即Ru >Rh >Pd >Ag ,Os >Ir>Pt >Au ,两种顺序恰好相反。金属态抗酸、碱的腐蚀性能应为原子的化学稳定性与金属键强度的综合表现 ,应重视区分原子态和金属态化学稳定性的差异 。
The chemical stability of atom state precious metals is according with the order of Ru<Rh<Pd<Ag and Os<Ir<Pt<Au; while the order of metal state stability and strength of metal bonds is according with Ru>Rh>Pd>Ag and Os>Ir>Pt>Au from the data of atomized heats, melting points, and boiling points of precious metals, The differences in concepts of atom and metal state of precious metals were also given out, and the explanations for these were discussed from the atomic structure and metal bond theories. [
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2001年第2期288-293,共6页
The Chinese Journal of Nonferrous Metals
关键词
贵金属
原子结构
金属键
稳定性
precious metals
atomic structure
metal bond
stability
