If you start with an element with 1,000,000 parent atoms, how many parent (P) and how many daughter (D) atoms will there be after 6 half-lives?

Question

Quizplus · Accepted Answer

The Answer is 0: P = 1,000,000, D = 0;
1 half-life: P = 500,000, D = 500,000;
2 half-lives: P = 250,000, D = 750,000;
3 half-lives: P = 125,000, D = 875,000;
4 half-lives: P = 62,500, D = 937,500;
5 half-lives: P = 31,250; D = 968,750;
6 half-lives: P = 15,625, D = 984,315.

If You Start with an Element with 1,000,000 Parent Atoms