Question

A student reported the radii of $Cu,C{u}^{+}$ and $C{u}^{2+}$ as $96pm,122pm$ and $72pm$ respectively. Do you agree with th reported value? Justify your answer.

Answer 1

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 distance(atomic radius) is less.So $C{u}^{2+}<C{u}^{+}<Cu$.But the measurement shows that $C{u}^{+}>Cu>C{u}^{2+}$