Lets do a classic school science project and make an atomic model of Platinum! It's fun. It's
easy. And your teacher says it's due in a week!
Materials for Making Atomic Model of Platinum
1) Roll of craft wire that is sturdy but can be bent easily. If you have a choice of color go
silver or if not go black.
2) Bag of Silver colored beads (medium size between the size of a pea and small
4) Silver or black Duct Tape to match wire color
5) Sharpie, or small bottle of white or black model paint
Basic Information Atomic Model of Platinum
Atomic Number: 78
Atomic Mass: 195.078 amu
Melting Point: 1772.0 °C (2045.15 K, 3221.6 °F)
Boiling Point: 3827.0 °C (4100.15 K, 6920.6 °F)
Number of Protons/Electrons: 78
Number of Neutrons: 117
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 21.45 g/cm3
Process for Making Atomic Model of Platinum
1) Make the inner circle of by bending the wire (about 4 inches Diameter). Connect the wire
ends together to complete the circle with small piece of duct tape.
2) Count out 78 of the silver beads and set aside.
3) Next make the 6 outer circles or orbitals as they are called.
4) You will need one of each of the following diameters 5 inch, 6 inch, 7 inch, 8 inch, 9
inch, 10 inch. Don’t tape the ends together yet to complete the circles. Just bend them for
now to make the basic circle size.
5) String 2 sliver beads on the 5 inch circle and tape ends together. String 8 sliver beads
on the 6 inch circle and tape ends together. String 18 sliver beads on the 7 inch circle and
tape ends together. String 32 sliver beads on the 8 inch circle and tape ends together. String
17 sliver beads on the 9 inch circle and tape ends together. String 1 sliver bead on the 10
inch circle and tape ends together.
6) Doing one circle at a time, arrange the beads in pairs of 2 and spread out along the
wire circles. Glue the beads in place so the stick to the wire as you go. Then set the wire
orbital circles aside and let the glue dry. Give one last check to make sure the beads and
grouped and spread like the picture below before walking away.
7) After the glue is dry and your beads are stuck in place, you need to use some more
wire to connect the orbital circles together. Cut three straight wires slightly over 1 inch for
each circle. Make sure the straight wires are the same size!
8) Starting with the center 4 inch inner circle, use a small strip of the silver or black duct
tape to connect the 4 inch circle to the 5 inch circle using three straight pieces of wire
(stagger them to make is stable).
9) Repeat the connecting process of the other rings.
10) After all the rings are attached. Use a sharpie or small bottle of model paint to mark a
negative sign “-“ on each bead as in the picture. These 78 beads are negatively charged
11) Maybe cut out a 4 inch piece of yellow construction paper and tape in the middle circle
and write the atomic details and basic information from below.
12) Attach some strings for hanging.
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