Draw a sketch of how electrons, protons and neutrons are placed in an atom. please:

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anonymous · Answer

The protons and neutrons make up the tightly-packed nucleus of the atom, the dense centre giving the atom nearly all its mass and determining its chemical composition. The electrons exist in an "electron cloud" around the nucleus. This is only a styalised illustration - remember the scale we're talking about here - but a basic example: http://www.universetoday.com/wp-content/uploads/2010/02/c-atom_e.gif Note that the nucleus is many many times smaller than as pictured; relative to the size of the atom, the electron orbitals are much farther away from the tiny nucleus than as demonstrated here.