Please help. Suppose that a newly discovered element called Centium has three isotopes that occur in nature. These are Centium-200, 203, and 209. Assume that these isotopes occur in equal amounts in nature. What will be the average atomic mass of this element?

Question

Please help.      Suppose that a newly discovered element called Centium has three isotopes that occur in nature. These are Centium-200, 203, and 209. Assume that these isotopes occur in equal amounts in nature. What will be the average atomic mass of this element?

anonymous · Answer

204, take the average of the 3 isotopes. If they occured in differnt frequencies you would need to take a weighted average.