Suppose the half-life of an isotope is 10 years. after how many years will half of this isotope have decayed into its daughter element?

5 years
10 years
20 years

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.