Atomic Structure.

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Presentation transcript:

Atomic Structure

Electrons Lightweight ( one million millionth of the mass of a speck of dust) Negative charge Surround the nucleus of an atom Always moving Can move in any direction within their shell or orbital Is equal to the number of protons

Protons Found in the nucleus Positive charge Mass is 1,836 times the mass of the electron and slightly less than the mass of the neutron Identifies the atomic number

Mass is nearly 1,840 times that of the electron Neutrons Found in the nucleus Has no electric charge Mass is nearly 1,840 times that of the electron

- Equals the number of protons and neutrons in the nucleus