Module 3c

Module 3c - Atomic number the number of protons in the...

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Early Atomic Models Atoms are composed of charged particles protons and electons Spontaneous radioactive decay creates alpha and beta particles as well as gamma rays Xrays can penetrate seemingly continuous matter Rutherford experiment Alpha paricles hit gold foil Most went straight through Some went in crazy directions Positively charged alpha particles sometimes interact strongly with a tiny positively charged nucleus Nucleus in center with electron cloud surrounding it
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Unformatted text preview: Atomic number the number of protons in the nucleus of a given element Protons - mass of 1 and charge of +1 Neutrons mass of 1 but no charge Electrons much lower mass charge of -1 What are isotypes Each element has only a unique Z but it can have several different weights Hydrogen one proton no neutron one electron Deuterium one proton one neutron one electron Tritum one proton 2 neutrons one electron (radioactive)...
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