Introduction to Radioactive Decay
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Objectives
• Describe how unstable nucleus decay
• Explain concepts of Radioactive decay
Overview
Radioactive decay is a modification to the nucleus of an atom. The nuclei in some isotopes are unstable, but in another not stable so they break down spontaneously. Through radioactive decay the atom of one element might become an atom of a different element.
[Diagram showing a Radioactive Atom emitting Energy/Radiation and a Particle]
This question includes visual content: A diagram showing an unstable nucleus labeled 'Radioactive Atom' composed of pink and grey spheres (protons and neutrons). Two arrows point away from the nucleus: a wavy red arrow pointing to the label 'Energy' and 'Radiation', and a straight red arrow pointing to a single small pink sphere labeled 'Particle'. The background contains an official state emblem (Eagle of Saladin).
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In this lesson, we are going to explore the fundamental concepts of radioactive decay and how unstable nuclei change over time.
Radioactive Decay Basics
Radioactive decay is fundamentally a modification to the nucleus of an atom. As we see in the diagram, it involves a radioactive atom releasing both energy and particles.
Definition
Radioactive decay is the spontaneous breakdown of an unstable nucleus.
The key characteristic is that this process is spontaneous. This means it happens on its own without any outside influence for atoms that are unstable.
Let's visualize what actually happens during this process using an SVG diagram based on our overview image.
The Decay Process
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