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Radioactivity
Radioactivity is the spontaneous decay or disintegration of the nucleus of the atom of an element during which it emits α,  β  or ϒ rays or a combination of any or all the three and energy (or heat).
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Radioactivity
12:14
Alpha Particles
00:00
Beta Particles
03:32
Gamma Rays
01:40
Radioactive Emissions (Properties)
04:37
Radioactive Decay, Half Life and Decay Constant
10:25
Transformation of Elements
01:46
Applications of Radioactivity in Agriculture
02:51
Applications of Radioactivity in Industry
04:24
Applications of Radioactivity in Medicine
04:53
Nuclear Energy
04:44
Nuclear Fusion and Nuclear Fission
05:52
Advantages of Nuclear Fusion over Fission
00:00
Radioactivity [Quiz]
00:15:00
Radioactivity [With QUIZZES]

Radiation

Alpha Particles

Beta Particles

Gamma Rays

Nature

Helium nuclei

 High energy electrons

Electromagnetic wave of short wavelength

Penetrating power

Little penetrating power e.g thin sheet

Good penetrating power e.g aluminium

High penetrating power e.g Lead

Charge

+2

e–

0

Velocity

5-7% speed of light

travels at approximate speed of light

Travel at speed of light

Effect of magnetic field

Slightly in a magnetic field (+ve)

Strongly deflected in a magnetic field    (-ve)

No effects

 

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