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

material will remain after 96 million years? What percentage would that be?If a radioactive element has a half-life of 16 million years, what fraction of the original amount of parent?
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%If a radioactive element has a half-life of 16 million years, what fraction of the original amount of parent?
1.5 percent will remain.


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


Hope I helped. :)