Chapter 20, Problem 20.20QP

Interpretation Introduction

Interpretation: The principle of radioactive isotopes should be outlined

Concept introduction:

• Spontaneous disintegration: radioactive material contain nuclides which under goes spontaneous disintegration.
• This process is the accompanied by the emission of one or more than one types of ionizing radiation like alpha ,beta, neutron, particles and gamma rays are disintegrate
• Radio active life-it refers to the amount of time taken by completion of half of its original isotope to decay. The rate of decay is a fixed rate called half-life.
• Half-life used in carbon dating-technique for the age calculation of dead wood fossil, monument old tree etc.
• The half-life period s are determined by considering carbon dating technique.
• Carbon dating uses the half-life of carbon-14 to find the approximate age of an object.  Its may be 40,000 year old or younger.
• Radioactive isotope: An atom in a chemical compound is replaced by another atom, of the same chemical element. This is the principle behind the radioactive tracers.  Titanium is the example of radioactive isotope.