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Introduction to Atomic Structure
The Structure of the Atom
Atoms of any element contain three types of fundamental particle; protons, neutrons and
The protons and neutrons are found in the central nucleus.
The electrons are arranged in groups (called shells or energy levels) around the nucleus.
Fundamental Particle Relative Mass Relative Charge
Proton 1 +1
Neutron 1 0
Electron 1/1840 -1
1.…read more

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Atomic Number and Mass Number
Atomic Number (Z) = Number of Protons in the nucleus
Mass Number (A) = Number of Protons and Neutrons in the nucleus…read more


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