The difficulty of ionizing an atom or molecule. Generally, it refers to the tendency of a metal to become a positive ion in a solution. This tendency varies depending on the type of metal, the concentration of the solution, etc., and electrode potentials are usually compared under constant conditions. The order of the major metals from largest to smallest is K, Ca, Na, Mg, Al, Zn, Cr(II/), Fe(II/), Cd, Co(II/), Ni, Sn(II/), Pb, Fe(III/), (H), Cu(II/), Hg(I/), Ag, Pt, Au. When a well-polished iron nail is placed in a copper sulfate solution, copper precipitates on its surface because iron has a greater tendency to ionize than copper. → Electrochemical series → Related topics Zinc | Batteries | Base metals Source : Heibonsha Encyclopedia About MyPedia Information |
原子または分子のイオン化の難易。一般には金属が溶液中で陽イオンとなる傾向をいう。この傾向は金属の種類,溶液の濃度などによって異なり,普通一定条件のもとにおける電極電位を比較する。主要金属についてのその順序は大きいほうからK,Ca,Na,Mg,Al,Zn,Cr(II/),Fe(II/),Cd,Co(II/),Ni,Sn(II/),Pb,Fe(III/),(H),Cu(II/),Hg(I/),Ag,Pt,Au。硫酸銅溶液中によくみがいた鉄釘を入れたとき,その表面に銅が析出するのは,鉄のイオン化傾向が銅より大きいためである。→電気化学列 →関連項目亜鉛|電池|卑金属 出典 株式会社平凡社百科事典マイペディアについて 情報 |
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