How can I make the atomic model of boron?
You can use craft cotton (or Styrofoam
Here is a summary of the instructions from ehow.
Their instructions are for a sodium atom, but we can adjust them to make a model of any atom.
You will need 11 large balls (5 of one colour for the protons and 6 of another colour for the neutrons) and 5 small balls for the electrons.
Glue the five protons and six neutrons into a ball, alternating between protons and neutrons as you go.
Cut a small ring and a large ring out of cardstock.
Use string to tie these rings in concentric circles around the nucleus (the picture below has a third ring for a sodium atom).
Glue two electrons to the inner circle and three to the outer circle.
Attach string to the outer circle for hanging, and display your 3D model of boron (the picture below is of sodium).