Embibe Experts Solutions for Chapter: Nuclear Chemistry, Exercise 2: Exercise-2

The number of $\mathrm{\alpha }$ and $\mathrm{\beta }$ particles lost when ${}_{92}{}^{238}\mathrm{U}$ changes to ${}_{82}{}^{206}\mathrm{Pb}:$

Which consists of charged particles of matter?

Which of the following does not occur?

Pick out the correct statements:

A.G.M. counter is used to study the radioactive process of first-order. In the absence of radioactive substance A, it counts 3 disintegration per second $\left(\mathrm{d}\mathrm{p}\mathrm{s}\right)$. When A is placed in the $\mathrm{G}.\mathrm{M}$. counter, it records $23\mathrm{ }\mathrm{d}\mathrm{p}\mathrm{s}$ at the start and $13\mathrm{ }\mathrm{d}\mathrm{p}\mathrm{s}$ after $10\mathrm{ }\mathrm{m}\mathrm{i}\mathrm{n}\mathrm{u}\mathrm{t}\mathrm{e}\mathrm{s}$. It records $\mathrm{x}\mathrm{ }\mathrm{d}\mathrm{p}\mathrm{s}$ after next $10\mathrm{ }\mathrm{m}\mathrm{i}\mathrm{n}\mathrm{u}\mathrm{t}\mathrm{e}\mathrm{s}$ and A has half-life period y minutes. $\mathrm{x}$ and $\mathrm{y}$ are :

If $\text{8}0\%$  of a radioactive element undergoing decay is left over after a certain period of time $t$ from the start, how many such periods should elapse from the start for just over$50\%$ of the element to be left over ?

Rate of radioactive disintegration $(-\mathrm{dN}/\mathrm{dt})$ is also known as :