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.
Collection accounts or charge-offs can be reported for seven years plus 180 days from the original date of delinquency (usually the date you failed to make your payment to the original creditor, resulting in the account eventually being charged off and/or sent to collections).