Here's a breakdown:

* Radium is a radioactive element. This means its atoms are unstable and prone to decay.

* Spontaneous disintegration refers to the fact that the decay happens naturally, without any external influence.

* Without outside forces emphasizes that the decay is an inherent property of radium atoms, not triggered by external factors.

During radioactive decay, radium atoms release particles and energy to transform into a more stable element. This process is governed by the laws of quantum mechanics and is a fundamental aspect of nuclear physics.

Let me know if you'd like more details about the different types of radioactive decay or the specific products of radium decay!