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 IRS issues most refunds in less than 21 days, although some require additional time. You should only call if it has been: 21 days or more since you e-filed; 6 weeks or more since you mailed your return, or when Where's My Refund tells you to contact the IRS; Taxpayers who claim the Earned Income Tax Credit or the Additional Child Tax Credit may experience a refund hold. According to the Protecting Americans from Tax Hikes (PATH) Act, the IRS cannot issue these refunds before mid-February.