A student reported that the radii of Cu, Cu+ and Cu++ are 96 pm, 122 pm and 72 pm respectively. Do you agree with the reported values? Justify the answer.

Ans: No, I don't agree with reported values. The measurement is made wrongly. More the positive charge more will be the nuclear attraction and outermost electron is more attracted towards the nucleus and the atomic radius is less. So Cu++ < Cu+ < Cu should be the order. But the measurement shows Cu+ > Cu > Cu++  which can not be true.