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:
There are several questions here. First, the IRS can collect for 10 years following the assessment of any tax. It appears from your post that your soon to be husband doesn't owe any tax for 2009 - If the IRS determines there is a tax due, they will complete his tax return for him (substitute for return or SFR). A tax determined from an SFR does not have a statute of limitations, the IRS can always collect that tax.