Issued as a cumulative or non-cumulative L/C, the former allows for unused credit amounts to rollover into subsequent periods while the latter maintains a fixed amount of credit available each period.
average atomic mass of magnesium is 24.3 g/mole so 24.3 X 1.56 X1021 / 6.02 X1023 = .063 grams.
According to the Jefferson National Linear Accelerator Laboratory, the properties of magnesium are: 1  Atomic number (number of protons in the nucleus): 12. 2  Atomic symbol (on the Periodic Table of Elements): Mg. 3  Atomic weight (average mass of the atom): 24.3050.ccording to the Jefferson National Linear Accelerator Laboratory, the properties of magnesium are: 1  Atomic number (number of protons in the nucleus): 12. 2  Atomic symbol (on the Periodic Table of Elements): Mg. 3  Atomic weight (average mass of the atom): 24.3050.