Questions
1 mg gold undergoes decay with 2.7 days half- life period amount left after 8.1 days is
a
0.91 mg
b
0.25 mg
c
0.5 mg
d
0.125 mg
detailed solution
Correct option is D
N=N012n⇒N=N012t/T1/2 ⇒N=1 x 128.12.7=123=18 ⇒N=18mg=0.125 mgTalk to our academic expert!
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The half life period of a radioactive element X is same as the mean life time of another radioactive element Y. Initially both of them have the same number of atoms. Then
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