The force of attraction on electron by the nucleus is directly proportional to — Atomic Structure Chemistry Question

💡 Solution & Explanation

Electrostatic force $F \propto \frac{Z}{r^2}$. Since $r \propto \frac{n^2}{Z}$, substituting $r$ gives $F \propto \frac{Z}{(n^2/Z)^2} = \frac{Z^3}{n^4}$. Therefore, correct answer is B.