Atomic Structure and The Periodic Table

Structure of the Atom;

The Nucleous;

• It's in the middle of the atom.
• It contains protons and neutrons.
• The nucleous has an overall positive charged and neutrons have no charge.
• Almost the whole mass of the atom is concentrated in the nucleous.
• Size wise its tiny compared to the atom as a whole.

The Electrons;

• They move around the nucleous.
• They have a negative charge (electorns and protons have equal but opposite charges).
• There tiny compared to the nucleous, but as they move around they cover a lot of space.
• The size of their orbites determine how big the atom is.
• They have vituallyno mass.
• They occupy shells (energy levels) around the nucleous.

Number Of Protons Equals Number Of Electrons:

• Neutrol Atoms have no charge
• The charge on the electrons is the same size as the charge on the protons but opposite.