TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for...
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Transcript of TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for...
![Page 1: TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for an open notebook quiz.](https://reader036.fdocuments.us/reader036/viewer/2022082613/5697bf841a28abf838c86e27/html5/thumbnails/1.jpg)
TOPIC: Radioactivity
Do Now: Take out your notes from Monday, and get ready for an open notebook quiz
![Page 2: TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for an open notebook quiz.](https://reader036.fdocuments.us/reader036/viewer/2022082613/5697bf841a28abf838c86e27/html5/thumbnails/2.jpg)
Not all isotopes are stable
Stable isotopes have…
1:1 ratio of n0 to p+ (for elements <20)
1.5:1 ratio of n0 to p+ (for elements >20)
To determine if an isotope is stable or unstable (radioactive) – compare the number of protons to neutrons
![Page 3: TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for an open notebook quiz.](https://reader036.fdocuments.us/reader036/viewer/2022082613/5697bf841a28abf838c86e27/html5/thumbnails/3.jpg)
Beyond Element 83 are very unstable (radioactive)
• No amount neutrons can hold nucleus together once it has 83+ protons
• All Elements 83 and above on PT are radioactive
• Other elements may have radioactive isotopes applet
![Page 4: TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for an open notebook quiz.](https://reader036.fdocuments.us/reader036/viewer/2022082613/5697bf841a28abf838c86e27/html5/thumbnails/4.jpg)
Radioisotopes- unstable nucleus – they are radioactive
the nucleus of element emits radioactive particles and/or electromagnetic waves…by emitting these particles,nucleus changes into different element (it’s trying to become more stable)
![Page 5: TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for an open notebook quiz.](https://reader036.fdocuments.us/reader036/viewer/2022082613/5697bf841a28abf838c86e27/html5/thumbnails/5.jpg)
Radioactive Decay Series
• Sometimes 1 change isn’t enough to achieve stability
• Some radioisotopes go through several changes before they achieve stability (and are no longer radioactive)
![Page 6: TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for an open notebook quiz.](https://reader036.fdocuments.us/reader036/viewer/2022082613/5697bf841a28abf838c86e27/html5/thumbnails/6.jpg)
U-238 PB-206