Elemental mercury is a shiny, silver-white metal that is a liquid at room temperature and is traditionally used in thermometers and some electrical switches. If not enclosed, at room temperature some of the metallic mercury will evaporate and form mercury vapours. Mercury vapours are colourless and odourless.
How much time need to pass for an AR account to be considered delinquent? The amount of time required to pass for an AR account to be  considered delinquent is 30 days.
When you fail to pay a bill on time and several months go by with it remaining unpaid, the creditor can choose to send your account to collections. The collection account will remain on your credit report for seven years from the date the original creditor first reported the debt as delinquent to the credit-reporting agency.