Introduction to Sub-atomic Particles

Details of the 3 sub-atomic particles

Proton position = nucleus relative mass = 1 relative charge = +1 Neutron position = nucleus relative mass = 1 relative charge = 0 Electron position = orbitals relative mass = 1/1840 relative charge = -1

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Caption: : There are various models for atomic structure.

Chemical Formula

An atom of Lithium can be represented as right -->The atomic number, Z, is the total number of protons in the nucleus.The mass number, A, is the total number of protons and neutrons in the atom.Number of neutrons = A - Z

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