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

Question

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

aaronq · Answer

(1/3)(200+(1/3)(203)+(1/3)(209)= weighted average

aaronq · Answer

missed a bracket..  (1/3)(200)+....

anonymous · Answer

Thank You Very Much aaronq