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1 Chapter 8 Sections 4 & 5 Ions 2 Atomic Size Size goes UP on going down a group.Size goes UP on going down a group. Because electrons are added further. - ppt download
Chemistry Lesson: Structure of the Atom - Protons, Neutrons & Electrons - Get Chemistry Help
Electron - Wikipedia
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NOVA | Teachers | Elegant Universe, The | Student Handout: Sizing Up Protons | PBS
