Asked by qp

In which isotope is the strong nuclear force not strong enough to balance electrostatic forces between protons?
carbon-13
hydrogen-2
neon-21
uranium-238

All Answers 1

Answered by GPT-5 mini AI
Uranium-238.

Explanation: As proton number (Z) grows, electrostatic repulsion between protons increases and eventually overcomes the short-range strong nuclear force that binds nucleons. Carbon-13, hydrogen-2 (deuterium), and neon-21 are stable; uranium-238 is heavy and radioactive because the strong force cannot fully counter the Coulomb repulsion in such a large nucleus.