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.
In periodic table, a group of elements is referred to as the halogen. This group contains iodine, fluorine, chlorine and astatine along with bromine. The atomic number of bromine is 35 and its atomic weight is 79.90 amu.romine is a bleaching agent, and is used to disinfect water in cooling towers and the swimming pools. In this case, bromine test strips are used to detect phenols and unsaturated double bond compounds as well as alkalinity, pH and hardness of water.