As of 2013, the United States spends about $554.2 billion annually to fund its military forces, and appropriates approximately $88.5 billion to fund Overseas Contingency Operations. Put together, the United States constitutes roughly 39 percent of the world's military expenditures.
the number of protons in the nucleus of an atom of a particular element. In a neutral atom, the atomic number equals the number of electrons. See also atom, electron, proton.
The quantities described in this table are: 1  the atomic number Z, corresponding to the number of protons found in the nucleus of an atom. The atomic number uniquely identifies a chemical element. 2  the symbol. 3  the name.  the isotopic masses for light atomic 1  species. nuclear spins for light atomic species.