In a hydrogen-like atom, the circumference of the Bohr orbit is observed to be exactly times the de — Atomic Structure Chemistry Question

💡 Solution & Explanation

According to de Broglie's wave theory applied to Bohr's orbits, an electron forms a stationary standing wave along the circumference of the orbit. This condition is given by $2\pi r = n\lambda$. The problem states that the circumference $2\pi r = 4\lambda$. Equating the two expressions gives $n = 4$.