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Atomic Structure

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Overview of the main feature of the srtucture of an atom
Ene Oruma
Mind Map by Ene Oruma, updated more than 1 year ago
Ene Oruma
Created by Ene Oruma over 7 years ago
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Resource summary

Atomic Structure
  1. sub-atomic particle
    1. protons
      1. +ve charge
        1. 1 unit
        2. neutrons
          1. no charge
            1. 1 unit
            2. electrons
              1. -ve charge
                1. 1/1840 units
                2. Nucleus
                3. atomic Number
                  1. the No' of P+
                  2. Mass Number
                    1. No' of P+ plus Neuts
                    2. Atomic Shells
                      1. 1st shell max 2e-s
                        1. 2nd & 3rd shells max 8e-s
                        2. Valency
                          1. Grp No' = No' of e-s in the outer shell
                            1. Grp I = 1e-s in outer shell
                              1. Grp 2 = 2 e-s in outer shell
                          2. elements with a full shell of e-s are stable
                            1. Noble gases Grp VIII
                            2. History
                              1. Thomson -solid sphere model
                                1. Rutherford Plum pudding model
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