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.
History Biography Geography Science Games Privacy. Magnesium is an alkaline earth metal and is the second element located in the second row of the periodic table. It is the eighth most abundant element on Earth. Magnesium atoms have 12 electrons and 12 protons. There are two valence electrons in the outer shell.