Chloride of which element is coloured?

Chloride of which element will be coloured ?

Which of two : cuprous chloride or cupric chloride is coloured and why?

Which of two : cuprous chloride or cupric chloride is coloured and why ?

In the laboratory, sodium chloride is made by burning the sodium in the atmosphere of chlorine which is yellow in colour. The cause of yellow colour is:

In the laboratory, sodium chloride is made by burning the sodium in the atmosphere of chlorine which is yellow in colour. The cause of yellow colour is: