One of the key technical differences between the forex markets is the way currencies are quoted. In the forwards or futures markets, foreign exchange always is quoted against the U.S. dollar. This means that pricing is done in terms of how many U.S. dollars are needed to buy one unit of the other currency.
Neutrons and protons make up the nucleus of an atom. They make up the mass of the atom. The volume of an atom is made up of electrons which move outside the nucleus Describe the parts of the atom and where they are found. Neutral atoms have the same number of electons (negative) and protons (positive).
Now, protons and neutrons are basically found at the atomic nucleus while electrons form the shell of the atom, moving around the nucleus. These are the basics, for further information you could go to Wikipedia (as usual) Proton, Neutron and Electron.