Copper I 和 Copper II 有咩唔同? 15點

Copper(I) means Cu+ ion or the compound containing Cu+ ion.

Copper(II) means Cu2+ ion or the compound containing Cu2+ ion.

Copper(II) compounds, e.g. copper(II) sulphate crystals and copper(II) oxide, are commonly used in laboratory. In aqueous solutions, copper(II) is blue in colour.

Copper(I) compounds are less common. This is because copper(I) cannot exist in aqueous solution. In aqueous solution, copper(I) ion undergoes disproportionation (self redox) to give copper metal and copper(II) ion.
2Cu+(aq) → Cu2+(aq) + Cu(s)
Cu(I) only exists as insoluble solids (e.g. copper(I) oxide, Cu2O) or complex (e.g. [CuCl2]-).

就好似 Fe2+ 同 Fe3+ 有咩唔同???

佢地既唔同係在於copper II已經去到最盡, 佢既oxidizing number 已經去到冇得再去, 姐係+2, 所以佢係冇得再被氧化..但Copper I就唔同, 佢可以再繼續被oxidizing 既野好似mno4- 甘去oxidized,,