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According to the graph, how many atoms would remain after two half-lives?

20 atoms

80 atoms

40 atoms

50 atoms


According To The Graph How Many Atoms Would Remain After Two Halflives 20 Atoms 80 Atoms 40 Atoms 50 Atoms class=

Sagot :

Answer:

Let No be initial no of atoms

N = N0 / 2      after 1 half-life

N = N0 / 4     after 2 half-lives

So after 2 half-lives 20 of the 80 atoms remain