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 atomic number is the number of protons in a single atom of that element. Os is number 76, meaning one atom of osmium has 76 protons. The proton number never changes in an element; it's basically what makes that element that element.