FWIW Department,
I think those analogies are based on the Bohr atom model -
perfectly round nucleus, perfectly spherical electron orbits, ...
Nuclei diameters are on order of about 10^-4 pm. The radius
of a Cu atom is about 1.29 pm. So there's a factor of roughly
10,000 or there abouts. So here's some 1:10,000 analogies ...
If the nucleas was a The electron would be
-------------------- ---------------------
Golf Ball (about 1.6" D) About 1/4 of a mile away
Softball (about 4" D) About 3/4 of a mile away
Actually a little less.
Basketball (about 10" D) About 1.5 miles away and with this
analogy the electron would be about
the size of a marble.
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