From your instructor, obtain a handout showing one possible arrangement of the element cards. identify each of the elements on the handout with its atomic number and

chemical symbol.

Hydrogen-2 is also known as deuterium as well as hydrogen-3 is known as tritium hydrogen-1 is our common hydrogen isotope a sample hydrogen gas has 99% hydrogen -1 ,0.8% deuterium , and 0.2% tritium what is the average atomic mass of this mixture of isotope to the thousands place