Chapter 24.2, Problem 12SSC

Interpretation Introduction

Interpretation:

What happens to unstable nuclei is to be explained.

Concept introduction:

Isotopes are atoms of same element whose number of neutrons is different. Isotopes having unstable nuclei are termed as radioisotopes. These unstable nuclei emit radiation to attain more stable atomic configuration is termed as radioactive decay.

Answer to Problem 12SSC

Unstable nuclei undergo radioactive decay to attain stability.

Explanation of Solution

Isotopes of atoms possessing unstable nuclei are termed as radioisotopes. The radiations are emitted by these unstable nuclei to attain more stable atomic configurations by the process of radioactive decay. In the process of radioactive decay, unstable atoms lose energy by emitting radiation. Three most common types of radiation are alpha, beta and gamma.

Conclusion

The three most common types of radiations are alpha, beta and gamma by which unstable nuclei emit radiation.