Radioactivity is associated with ______?

ریڈیو ایکٹیویٹی ______ کے ساتھ وابستہ ہے؟

Emissions of electrons

Decay of Nucleus

Decay of atoms

None of these

Radioactivity is the spontaneous decay of an unstable atomic nucleus.

It emitting radiation such as alpha, beta, or gamma rays.

This process occurs in radioactive elements like uranium and radium, leading to nuclear transformation over time.