1. Let us build model for Na atom. Fix a drawing pin in the centre of a cardboard. This represents your nucleus of the atom of the element you would like to build model for.
2. Calculate the number of electrons in each orbit of the sodium atom.
3. Make a circular loop of wire with diameter of about 6 cm. insert two beads and close the ends with the help of sleeve. This is the first orbit. Fix it on the cardboard so that drawing pin is in the centre of this loop.
4. Make another circular loop of diameter of about 10 cm. Insert 8 beads and close the ends. This is the second orbit. Fix this on the cardboard in such a way that the drawing pin is in the centre of this loop also.
5. Make another loop of diameter, say 16 cm. Insert 1 bead and close the ends. This is third orbit. Fix it on the cardboard so that the drawing pin is again at the centre of this loop.
Model of electron distribution in sodium atom
Conclusion:
A model of sodium atom is built by using wire and beads.