Radioactive Substances and Its Uses

The radioactive decay of uranium was first discovered by Antoine Henri Becquerel in 1896. The Paris physician accidentally discovered that photographic plates wrapped in dark paper were blackened by invisible radiation was capable of discharging an electroscope. In 1898, a France couple, Marie and Pierre Curie, discovered the radioactive elements radium and polonium. Marie Curie also discovered the radioactive element thorium..

Image by oparvez via Flickr

The nucleus of an atom consists of protons and neutrons. The protons and neutrons are bounds together by a strong force and the nucleus is stable. Some nuclei are unstable. They emit radioactive radiation to become more stable nuclei. Medium-sized are more stable than heavy nuclei and light nuclei.

Radioactive substances are elements with unstable nuclei with undergo spontaneous decay to become more stable elements while emitting dangerous and invisible radioactive radiation. The isotopes carbon -14, cobalt -60 and iodine -131 are examples of radioactive substances whereas carbon -12, cobalt -59 and iodine -132 are not radioactive substances. All natural isotopes above the element bismuth in the Periodic Table are highly unstable and radioactive.

Radioactive Decay

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Radioactive decay or radioactivity is a process where an unstable atom becomes a more stable atom by emitting particles or radiation. Radioactive decay is a random process. It is not possible to tell when a particular atom will give out radioactivity. However it is possible to know the time taken for half of a large number of unstable atoms to decay.

Image via Wikipedia

The radioactive decay of uranium was first discovered by Antoine Henri Becquerel in 1896. The Paris physician accidentally discovered that photographic plates wrapped in dark paper were blackened by invisible radiation was capable of discharging an electroscope. In 1898, a France couple, Marie and Pierre Curie, discovered the radioactive elements radium and polonium. Marie Curie also discovered the radioactive element thorium.

Radioactive Radiation


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20 Responses to “Radioactive Substances and Its Uses”
  1. Sheila M Says...

    On July 1, 2009 at 10:57 am

    Wow, what could one really say. You research and do it very well!


  2. Kate Smedley Says...

    On July 1, 2009 at 12:59 pm

    Well written and educational – I learned something again!


  3. deep blue Says...

    On July 1, 2009 at 4:08 pm

    Very well written. Only an expert could do that.


  4. Debra Mann Says...

    On July 1, 2009 at 5:19 pm

    Very informed and researched article! Great article, MrGhaz!


  5. Unofre Pili Says...

    On July 1, 2009 at 7:53 pm

    This is great Mr. Gahz. All angles considered and well-researched.


  6. Juancav Says...

    On July 1, 2009 at 10:23 pm

    Excellent matter,well explained and educational too.


  7. Ruby Hawk Says...

    On July 1, 2009 at 10:36 pm

    Thank you for all this educational information. You are a wonderful teacher.


  8. Inna Tysoe Says...

    On July 1, 2009 at 11:05 pm

    Well written. Thanks.

    Inna


  9. California Dreamer Says...

    On July 2, 2009 at 2:36 am

    You know, some days, I think I will radiate my brain just using my toothpaste, lol….
    Seriously, your article was very good, thanks for sharing it.


  10. mikky webs Says...

    On July 2, 2009 at 12:46 pm

    You really inspire me. I believe every possibility of nature and its’ usefulness. Thanks for nourishing me.


  11. DA Cournean Says...

    On July 2, 2009 at 3:49 pm

    Awesome article!


  12. Yovita Siswati Says...

    On July 3, 2009 at 7:27 am

    Very educational and comprehensive. I learn a lot.


  13. CHAN LEE PENG Says...

    On July 5, 2009 at 12:38 am

    Educational piece and your research was great too. Give you “liked it”


  14. CutestPrincess Says...

    On July 21, 2009 at 12:49 pm

    very well-researched article… excellent job!


  15. antznyz Says...

    On August 4, 2009 at 6:39 am

    your content are really superb..
    congrats..
    i learn something new and revise well based on your content..
    try to come out with other new thing..


  16. Idazalee Says...

    On August 10, 2009 at 11:30 pm

    very educational and well presented article. I always enjoyed reading your works. Thanks for sharing


  17. Van Antwerpen Says...

    On October 28, 2009 at 2:08 pm

    thanks a lot! u help me for my school’s assignment:D


  18. vinay(india) Says...

    On April 17, 2010 at 11:34 pm

    awsome!!!!!!!!!!!!!!


  19. narasimha Says...

    On November 6, 2010 at 3:37 am

    When & why a nucleus becoms unstable? is it an inerent property of a nucleus?


  20. roky Says...

    On July 24, 2011 at 9:16 pm

    i can not find Its Uses.pl post its uses


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