Question

Name an ion which is responsible for the blue colour of aqueo copper sulphate.​

Answer 1

Copper Sulphate is blue, not because of air, but because it has been oxidised to the Cu2+ ion which is a d-block metal ion. The electrons in the metal ion can transition between different energy states and therefore the ion absorbs light energy and can be seen as being BLUE.

Answer 2

Answer:

Copper Sulphate is blue, not because of air, but because it has been oxidised to the Cu2+ ion which is a d-block metal ion. The electrons in the metal ion can transition between different energy states and therefore the ion absorbs light energy and can be seen as being BLUE.