Chemical element whole number. For example, the relative atomic mass of chlorine is 35.453 u, which differs greatly from a whole number as it is an average of about 76% chlorine-35 and 24% chlorine-37. Whenever a relative atomic mass value differs by more than 1% from a whole number, it is due to this averaging effect, as significant amounts of more than one isotope are naturally present in a sample of that element. Chemists and nuclear scientists have different definitions of a "pure element". In chemistry, a pure element means a substance whose atoms all (or in practice almost all) have the
Greek withdrawal from the eurozone Greek withdrawal from the eurozone A Greek withdrawal from the eurozone is a hypothetical scenario in which Greece withdraws from the Eurozone, likely to allow for the country to deal with its government-debt crisis. , no such withdrawal has occurred, nor is one in prospect. This conjecture has been referred to as "Grexit", a portmanteau combining the English words "Greek" and "exit", and which has been expressed in Greek as ελλέξοδος, (from "Ελλάς" + "έξοδος"). The term "Graccident" (accidental Grexit) was coined for the case that Greece exited the EU and the euro without intention. These terms first came into