Chapter 30, Problem 20Q

To determine

Reasons for elements with $Z\ge \text{ 92}$ are not stable

Answer to Problem 20Q

Solution:

Elements with $Z\ge \text{ 92}$ are not stable because short range of the attractive strong nuclear force

Explanation of Solution

For atomic number $\ge \text{ 92}$ the short range of the attractive strong nuclear force.Which means that no neutrons are able to overcome the long-range electrostatic repulsion of the large concentration of protons. No numbers of neutrons are capable of using this strong force to overcome the electric repulsion of that many positive charges in such close proximity.