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Technetium-99 has a half life of 8 hours. How much of a 100 gram sample is undecayed after 16 hours?
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Technetium-99 has a half life of 8 hours.

How much of a 100 gram sample is undecayed after 16 hours?

User Ankit Giri
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1 Answer

2 votes

Answer:

50g

Step-by-step explanation:

The half - life of a radioactive material is the time taken for half of a material to decay by half or into half.

The faster the half life the faster the rate of this decay and vice versa.

Now if initially we have 100g of a Technetium - 99;

If the half - life is 8hrs, at every 8 hours, the mass of technetium will decay by half;

So; at 16hrs, the mass of the material will be 50g

User David Weiser
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