What is the most common isotope for an atom of phosphorus? (Students must know to logik at the periodic table for the listing of most common isotopes) phosphorus phosphorus -31 phosphorus -30 phosphorus - 15

The most common isotope of phosphorus is phosphorus-31. It makes up about 100% of all naturally occurring phosphorus atoms. The other isotopes, such as phosphorus-30 and phosphorus-15, are much less common and are not typically found in nature.