Introduction to Radioactivity 2016 A.notebook 1 December 02, 2016 May 1312:57 PM Unit 5: Nuclear Chemistry Aim : Introduction to Radioactivity Particles and decay Chapter 19 in textbook Tables Used: Table N and Table O https://phet.colorado.edu/sims/html/buildanatom/latest/buildanatom_en.html May 1312:57 PM Element Stability • Stable nuclei of elements have a proton to neutron ratio of 1:1 or close to it. • Unstable nuclei of elements have a larger p to n ratio than 1:1 > The protons and neutrons exist in a balance that stabilizes the nuclear force and binding energy. • Binding energy energy that binds the nucleons of the nucleus together. • Elements with atomic # 83 or greater are ALL unstable and radioactive. (Bismuth and up)
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Introduction to Radioactivity 2016 A.notebook
1
December 02, 2016
May 1312:57 PM
Unit 5: Nuclear Chemistry
Aim: Introduction to RadioactivityParticles and decay
Chapter 19 in textbookTables Used: Table N and Table O
Element Stability• Stable nuclei of elements have a proton to neutron ratio of 1:1 or close to it.
• Unstable nuclei of elements have a larger p to n ratio than 1:1> The protons and neutrons exist in a balance that stabilizes the nuclear force and binding energy.
• Binding energyenergy that binds the nucleons of the nucleus together.
• Elements with atomic # 83 or greater are ALL unstable and radioactive. (Bismuth and up)