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Home > 4. Chemistry and Physics > Atomic Structure
Podcast: 4. Chemistry and Physics
Episode:

Atomic Structure
Category: Science & Medicine
Duration: 00:00:53
Publish Date: 2011-07-13 19:35:40
Description: Transcript: Atoms are tiny pieces of matter, but they are composed of even smaller particles. Orbiting the nucleus of every atom are electrons. Electrons have negative charge and a mass of only nine times ten to the minus thirty-one kilograms. There are 1,836 times lighter than a proton. The nucleus of an atom consists of a mixture of protons and neutrons. Protons are positively charged. Neutrons have no electrical charge. Both protons and neutrons have a mass of roughly 1.7 times ten to the minus twenty-seven kilograms. This is the basis of atomic structure. The neutrons and protons are themselves not fundamental particles. Each are composed of fractionally charged quarks. Electrons, we believe, are fundamental.
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