Question
Distinguish between $\alpha , \beta$ and $γ$ rays.

Answer

 
SI. no α particles $\beta$ particles γ radiations
$1$ $\alpha $ particles are Helium nucleus 2He4 $\beta$ particles are like electgrons $_{-1}\beta^\circ$ $γ$ radiations are electromagnetic radiations.
$2$ $\alpha $ particles are positively charged. $\beta$ particles are negatively charged. $γ$ radiations have no charge.
$3$ the mass of each α particles is $4 a.m.u$ The mass of each $\beta$ particle is negligible. $γ$ radiations have no mass.
$4$ α particles has velocity less than velocity of light i.e $1 x 10^7ms^{-1}.$ Velocity of $\beta$ particle is comparable to the velocity of light. Velocity of $γ$ radiation is equal to the velocity of light.
$5$ Ionosation power of a particles is maximum.It is about $100$ times more than that of $\beta$ particles Ionisation power of $\beta$ particles is about $100$ times more than that of $γ$ radiations Ionisation power is least.
$6$ The penetrating power of a particle is least. penetrating power of $\beta$ particles is less but $100$ times more than that of α particle. $γ$ radiations have maximum penetration power. They are $100$ times more penetrating than $\beta$ paticles.
$7$ $\alpha$ particles are less deflected by electric and magnetic fields. $\beta$ particles are more deflected by electric and magnetic field but in opposite direction. $γ$ radiations are unaffected by electric and magnetic field.

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