An example could be a diagram, or picture, or equation, etc.
Gold
There are many examples of atom, 106 in fact. Look at the Periodic Table of the elements.
the atom model
This is the quantic model of atom.
A model of the atom is a 3-D structure of the atom's structure.
You mean elements? So far scientists have brought out some 109 elements. If you mean atom model, then first Prout's model Then Thomson's, Rutherford's, Bohr's, Sommerfeld's. Finally vector atom model.
Molecules are not atoms, so I assume they can be classified as non-examples of atoms. Water is a molecule, and therefore not an atom. Water is comprised of two hydrogen atoms and one oxygen atom. Carbon is an atom.
The Bohr model of the atom was a planetary model.
The Bohr model is a simple atomic model that depicts electrons circling the nucleus in specific energy levels or shells. It was proposed by Niels Bohr in 1913 to explain the behavior of electrons in an atom. An example of the Bohr model is the representation of the hydrogen atom, where a single electron orbits the nucleus in discrete energy levels.
Today the model of atom is based on quantum mechanics.
A model of the atom is a 3-D structure of the atom's structure.
A Millikan atom model doesn't exist.