The update impacts the (Read more...) The Defense Property Accountability System (DPAS) is a Department of Defense (DoD) property management system. It is the Accountable Property System of Record (APSR) for over 32 DoD Agencies and Military Services. DPAS contains three modules, Property Accountability, Maintenance & Utilization and Warehouse Management. This program is administered by the Office of the Under Secretary of Defense for Acquisition, Technology and Logistics (OUSD AT&L), a branch of the Office of the Secretary of Defense.
Seventeen elements are generally classified as nonmetals; most are gases (hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, krypton, xenon and radon); one is a liquid (bromine), and a few are solids (carbon, phosphorus, sulphur, selenium, and iodine).
Though often placed at the top of the alkali metal column in the periodic table, hydrogen does not, under ordinary conditions, exhibit the properties of an alkali metal. Instead, it forms diatomic H2 molecules, analogous to halogens and non-metals in the second row of the periodic table, such as nitrogen and oxygen.