To determine whether people have worked enough to meet the requirements, the SSA requires people to earn a certain number of work credits. Work credits are essentially income that is assigned a value. In general, you must have accumulated 40 work credits (20 in the past 10 years) to be eligible for disability.
Bromine is a chemical element with symbol Br and atomic number 35. It is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. Its properties are thus intermediate between those of chlorine and iodine.
bromine trifluoride. Formula: BrF 3; Molecular weight: 136.899; CAS Registry Number: 7787-71-5; Information on this page: Phase change data; References; Notes; Other data available: Gas phase thermochemistry data; Gas phase ion energetics data; Vibrational and/or electronic energy levels; Options: Switch to calorie-based units; Data at NIST subscription sites: