Radioisotopes : Properties

50 %
50 %
Information about Radioisotopes : Properties

Published on February 15, 2014

Author: AmanVerma028



properties of radio-isotopes


Emits Radiation ● Radioactive isotopes are unstable so they go into a radioactive decay emitting radiations. ● Till they become stable ● 3 types of radiations: Alpha particles (α) Beta particles (β) Gamma particles (γ)


Half-life (t1/2) ● ● The time taken for the activity of a radioisotope to reach half of it's original value. Thus activity decreases with time.

Half-life (t1/2) For example, suppose we had 20,000 atoms of a radioactive substance. If the half-life is 1 hour, how many atoms of that substance would be left after: Time (after) Number of atoms remaining % of atoms remaining 1 Hour (one lifetime) 10,000 50% 2 hours (Two lifetimes) 5,000 25% 3 hours (Three lifetimes) 2,500 12.5%

Half-life & Radioactivity

Penetration Property ● ● Radioactive radiations have different PENETRATING ability. Depends on ''thickness and density'' of material

Penetrating Power of Radiation α β γ n Skin & paper 5mm brass 6mm Al α = alpha β = Beta Pb & concrete Very thick concrete (2m) γ = Gamma n = Neutron

Same Chemical properties ● ● Isotopes of same element have same Chemical properties. Due to same no. of electrons in the 'Outermost Shell'.

Different Physical properties ● Differ from isotopes to isotopes. ● Based on number of neutron.

Different Physical properties ● Differ from isotopes to isotopes. ● Based on number of neutron.

Add a comment

Related presentations

Related pages

Summary of Radioactivity: Properties and Uses

A summary of radioactive particles, isotopes and their properties and uses, suitable for high school students
Read more

Nuclear Medicine: Radioisotopes - RADIOCHEMISTRY SOCIETY ...

Medical Isotopes : General Concepts ... Many important properties of an isotope depend on its mass. ... WHAT ARE RADIOISOTOPES ?
Read more

Radionuclide - Wikipedia, the free encyclopedia

A radionuclide (radioactive nuclide ... for their chemical properties and as sources of radiation. ... Radioisotopes are also a method of treatment in ...
Read more

Radioisotopes in Medicine | Nuclear Medicine

Radioisotopes in medicine, nuclear medicine, the use of radioisotopes for diagnostics, radiation therapy, radiopharmaceuticals and other beneficial medical ...
Read more


The regulation and use of radioisotopes in today’s world 1 More than 100 years ago, scientistsIntroduction discovered that many elements com-monly found ...
Read more

Radioisotope properties and precautions | Environmental ...

C-14 - Properties and Precautions ; Radiotoxicity: Low to medium: Half life: 5730 years: Emission: Moderate Energy Beta (0.156 MeV) Range in air: 24 cm ...
Read more

Radioisotopes in Industry | Industrial Uses of Radioisotopes

Radioisotopes in Industry, use of radioisotopes for radiography, gauging applications and mineral analysis. Short-lived radioactive material used in flow ...
Read more

Isotope - Wikipedia, the free encyclopedia

Chemical and molecular properties. A neutral atom has the same number of electrons as protons. Thus different isotopes of a given element all have the same ...
Read more