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Alpha "rays" are actually high speed particles. Early researchers tended to refer to any form of energetic radiation as rays, and the term is still used. An alpha particle is made up of two protons and two neutrons, all held together by the same strong nuclear force that binds the nucleus of any atom. In fact, an alpha particle really is a nucleus - it's the same as the nucleus of a common atom of helium - but it doesn't have any electrons around it, and it's traveling very fast. Alpha particles are a type of ionizing radiation.
in the same way beta rays are stream of electrons.
gamma rays are electromagnetic rays.
see the particle nature of alpha is greatest whereas gamma rays have the smallest particle nature.
I would suggest you to not bother about positrons and other particles because their correct explanation will require higher mathematics
Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE preparation. DO APPROVE IF YOU FIND THE ANSWER USEFULRegards,Askiitians ExpertsRahul IIT Roorkee
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