It has two valency electrons in its outermost orbital.
The oxidation number of copper in CuNH3Cl2NO3 is +1. This is because the overall charge of the complex ion is -1, and the oxidation numbers of N, H, Cl, and O remain the same as their typical values, leaving copper with a +1 oxidation state to balance the charge.
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Copper(I) sulfate is Cu2SO4: the ratio Cu/SO4 is 2.
Copper has a valency of +1 and +2, meaning it can form ions with a charge of either +1 or +2.
Copper II Bicarbonate is Cu(HCO3)2 and Copper I Bicarbonate is CuHCO3
+2
The chemical formula for copper(II) bicarbonate is Cu(HCO3)2.
The Roman numeral II in Copper II denotes the oxidation state of copper, which is +2. This indicates that copper in the compound has lost two electrons and has a 2+ charge.
When copper combines with oxygen to form copper oxide, the copper ion has a +2 charge. This is because copper typically forms a 2+ oxidation state when it combines with oxygen in this compound.
The formula for copper(II) nitrite is Cu(NO2)2. It is formed by the combination of copper(II) ion (Cu2+) and nitrite ion (NO2-), resulting in the compound copper(II) nitrite.
When copper reacts with chlorine, copper chloride is formed. The balanced chemical equation for the reaction is: 2 Cu + Cl₂ → 2 CuCl
If it's copper (I): CuClO4 If it's copper (II): Cu(ClO4)2