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Cu 2+ is blue. Cu2O is reddish; CuO is black, I think.

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16y ago

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What flame colour does copper chloride give?

Flame colours depend on just the metal ion. All copper compounds give the same colour, green.


What ion is responsible for the blue colour?

The ion responsible for the blue color in many compounds is usually copper(II) ion (Cu2+). Copper(II) compounds often appear blue due to the absorption of certain wavelengths of light in the visible spectrum associated with the ion's electronic structure.


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The metallic ion in copper II chloride is copper (Cu2+).


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What are two different charges copper can have?

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When copper combines with oxygen to form copper (II) oxide the charge of the copper ion is?

When copper combines with oxygen to form copper (II) oxide, the charge of the copper ion is +2. This is because in copper (II) oxide, each copper ion has lost two electrons to oxygen atoms, resulting in a +2 charge.


What is the oxidation state of cupric ion in copper tartar-ate?

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