1.

A certain nuclide has a half-life period of 30 minutes. If a sample containing 600 atoms is allowed to decay for 90 minutes, how many atoms will remain

Answer»

200 ATOMS
450 atoms
75 atoms
500 atoms

Solution :`n = (90)/(30) = 3 RARR N = (600)/(2^(3)) = 75` atoms


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