19. IMPORTANT FACTS:
• Pending models may need a wood or metal support
to pend it for exhibition.
• Electrons should be smaller than protons or
neutrons
• It’s difficult to make circular metal wires, they may
need a mould for a perfect shape.
• You have to decide where to add atom information:
Name
Symbol
Atomic number = number of electrons or protons
Atomic weight
Electrons in the valence layer
QR Code for detailed description