Pankaj Bhatt Solutions for Chapter: Radioactivity and Nuclear Energy, Exercise 2: QUESTIONS

Complete the following nuclear reaction: ${}_{2}H{e}^4+{}_{2}H{e}^4\to {}_{3}L{i}^7+ \_\_\_\_\_ .$

How many alpha and beta particles are emitted when $\mathrm{U}-235$ decays to $\mathrm{Pb}-207$?

Copy and complete the following nuclear equations by filling in the correct values of atomic and mass numbers for $P_{1,} P_2$ and $P_3$.

${{}_{92}P}^{238} \stackrel{\alpha }{\to }$$P_1 \stackrel{\beta }{\to }$$P_2 \stackrel{\beta }{\to }$$P_3.$

Draw a cathode ray tube consisting of a heater, a cathode, a cylindrical anode and a defecting system. Show how you will connect a low tension battery of $6 \mathrm{V}$ and a high tension battery of $1000 \mathrm{V}$to the cathodes of the tube.

The isotope of ${}_{92}\mathrm{U}^{238}$ decays by alpha emission to an isotope of thorium $\left(\mathrm{Th}\right)$. The thorium isotope decays by beta emission to an isotope of protactinium $\left(\mathrm{Pa}\right)$. Write down the equation to represent these two nuclear changes.

See the figure. Copy and complete the following diagram by showing and labelling the paths of alpha, beta and gamma radiations in an electric field. Name the radiations which have the least penetrating power.

In the following radioactive equation ${}_{92}U^{235}\underset{\alpha }{\to }X\underset{\beta }{\to }Y\underset{\gamma }{\to }Z$  write atomic number band mass number of the nuclei $X,Y$and $Z.$

Mention two uses of radioactive isotopes.