While specific positions will have unique requirements (example: Flight Attendant minimum age requirement is 21 years of age; see individual job descriptions), you must possess at least a H.S. diploma/GED equivalent, be at least 18 years of age, and possess current authorization to work in the U.S. to work at Delta.
Potassium (IPA: /pÉ(Ê)ËtasiÉm/) is a chemical element. It has the symbol K (Arabic: al qaljaâ â Latin: kalium) and atomic number 19 and an atomic mass of 39.098. Calcium (IPA: /ËkalsiÉm/) is the chemical element in the periodic table that has the symbol Ca and atomic number 20.
Therefore, atomic mass of magnesium is 12 u + 12 u = 24 u. Calculation of Number of Electrons, Protons and Neutrons. From the knowledge of atomic number and mass number of an element it is possible to calculate number of electrons, protons and neutrons in an atom of the element.