Question

If the mass of a radioactive sample is double the activities of the sample and the disintegration constant of the

Answer 1

Answer:

1)The activity of the same is given by we can get it

R=λN

Here N is number of nuclei

Which equals the number of atoms.

Then the number of moles is the mass of the sample divided by its molar mass that is

$N=\frac{mN_{A} }{M}$

Substitute into the above equation we get

$R=\frac{^mN_{A} }{M}$

Here the rate of decay is proportional to the mass of the sample which means if the mass of a radioactive sample is doubled then the activity will be doubled. It means increases.

The disintegration constant is independent of mass so it will be constant and same.