The number of possible elements is not known. A very early suggestion made by Elliot Adams in 1911, and based on the arrangement of elements in each horizontal periodic table row, was that elements of atomic weight greater than 256Â± (which would equate to between elements 99 and 100 in modern-day terms) did not exist.
IRS debts can only legally be collected for 10 years, but there are many events that may stop that 10 year clock from running. This is known as tolling the statute of limitations. Events that stop or toll the statute of limitations from running include:
The time periods can be even longer than six years in some cases. The IRS has no time limit if you never file a return. For unfiled tax returns, criminal violations or fraud, though, the practical limit is usually six years. Another scary rule is that the IRS can audit forever if you omit certain tax forms. Plus, once an assessment is made, the IRS collection statute is typically 10 years. In some cases, the IRS can go back 30 years. In Beeler v. Commissioner, the Tax Court held Mr. Beeler responsible for 30 year-old payroll tax penalties.