Assertion : Cuprous ion (Cu+) is colourless whereas cupric ion (Cu++) is blue in the aqueous solution.
Reason : Cuprous ion (Cu+) has unpaired electrons while cupric ion (Cu++) does not.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false