Gold and rhodium are rather unusual in that they occur in only one stable isotope each, gold-197 and rhodium-103. Tin offers the most, ten. ⌅⌅ So what you’re looking for is an element that’s extremely scarce in parts per billion, and an isotope of it that’s of such a ...
In such cases further information is available from local postal authorities.In the table below the authorized post office abbreviations of U.S. states are listed.Alabama AL Kentucky KY Ohio OH Alaska AK Louisiana LA Oklahoma OK Arizona AZ Maine ME Oregon OR Arkansas AR Maryland MD Pennsylvania ...