Thallium-201 has a half-life 73 hours. If 4.0 mg of thallium-201 disintegrates over a period of 5.0 °, how many milligrams of th
1 answer:
<u>Given:</u>
Half life of Thallium-201 (T1/2)= 73 hrs
Initial amount of thallium (A₀) = 4.0 mg
Disintegration Time period (t) = 5.0 hrs
<u>To determine:</u>
Amount of thallium remaining, A
<u>Explanation:</u>
The radioactive half-life (T1/2) can be related to the amounts of the radio active element through the relation:
A =
A = 4.0 * = 3.815 mg
Ans: Amount of thallium-201 remaining is 3.815 mg
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