If a radioactive element has a half-life of 16 million years, what fraction of the original amount of parent?

Question

material will remain after 96 million years? What percentage would that be?

Answer 1

1.5 percent will remain.

That means 3/32 of the material will be from the parent.

Hope I helped. :)

Answer 2

You start with 96 million years and that means for a half life of 16 million years there are 6 half-life cycles ( 98 / 16 = 6 )

Then 100% halved 6 times leaves 1.56 %

That is

100%

50

25

12.5

6.25

3.125

1.56%