Question
A radioactive element of atomic weight 99 has a halflife of 6 hours. Find the activity in a solution containing 1 gram of the element in the beginning. The Avogadro’s number is .

None of these



medium
Solution
By the definition of Avogadro’s number, 99 gram of the element contains atoms. Therefore, the number of atoms in the solution containing 1 g of the element is
The decay constant is
The activity in the solution in the beginning (at t = 0) is
.
SIMILAR QUESTIONS
1 g of particles per second. Find its halflife and average life. Avogadro’s number is .
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.
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