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.
Â· just now. 1  To help you understand, read the example that following: Here is a method to find the number of protons, electrons and neutrons in any atom. 2  Gold's symbol is Au for Aurum. It's Atomic Weight or Atomic mass is 197amu. 3  Gold has an atomic number of 79 and an atomic mass of ~197. The number of protons is 79.