There is much more uranium- 235 in a typical nuclear power plant than there was in the bomb that destroyed the city of Hiroshima. Why can't the reactor explode like an atomic bomb?

Question: Explain the difference between a nuclear power plant and an atomic bomb in terms of their behavior with uranium-235 and why a nuclear reactor cannot explode like an atomic bomb. Answer: The key difference between a nuclear power plant and an atomic bomb is the manner in which uranium-235 undergoes fission, releasing energy. In an atomic bomb, uranium-235 undergoes rapid, uncontrolled, and exponentially increasing chain reactions, ultimately causing a massive explosion. However, a nuclear reactor is designed to maintain controlled and steady chain reactions using control mechanisms like control rods and efficient heat removal systems. These features prevent a nuclear reactor from achieving the uncontrolled, explosive chain reaction seen in atomic bombs, despite having more uranium-235.