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JEE-MAIN 2021
25-07-2021 S1
Question
The half-life of ${ }^{198} \mathrm{Au}$ is 3 days. If atomic weight of ${ }^{198} \mathrm{Au}$ is $198 \mathrm{~g} / \mathrm{mol}$ then the activity of 2 mg of ${ }^{198} \mathrm{Au}$ is [in disintegration/second]
Select the correct option:
A
$2.67 \times 10^{12}$
B
$6.06 \times 10^{18}$
C
$32.36 \times 10^{12}$
D
$16.18 \times 10^{12}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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