what is beta decay in radioactivity?

The radioactive decay in which high energy electrons are emitted from the nucleus of a radioactive atom is called beta decay. When a nucleus undergoes beta decay it transforms into a new nucleus after emitting a beta particle.

Example:

15P32 ---> 16S32 + -1e0

-1e0 is the beta particle of nuclear origin.

Note that in beta decay the atomic number of the new nucleus is more than the original nucleus but there is no change in mass number.

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Beta decay:Beta decay is the phenomenon of emission of an electron from a radioactive nucleus.When a parent nucleus emits a β particle, (ie electron) , mass number remains the same because mass of electron is negligibly low. However, the loss of unit negative charge is equivalent to a gain of unit positive charge. Therefore the atomic number is increased by 1. Let us suppose that X is the nucleus undergoing β decay , hence:zXA = z+1YA + -1e0 +Q where Q is the energy released during β decay

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Radioactive decay is a process in which a large nucleus disintegrates to form small nuclei. One of the type of such decay is β-decay. In this process a neutron inside a nucleus breaks up into an electron and proton. The β-particle is actually an electron. Emission of β-rays (flow of electron) involves a huge amount of energy.
In some reactions positronis emitted which is similar to electron in mass and size but has a positive charge.
 
Hope it is clear to you!
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The radioactive decay in which high energy electrons are emitted from the nucleus of a radioactive atom is called beta decay. When a nucleus undergoes beta decay it transforms into a new nucleus after emitting a beta particle.

Example:

15P32 ---> 16S32 + -1e0

-1e0 is the beta particle of nuclear origin.

Note that in beta decay the atomic number of the new nucleus is more than the original nucleus but there is no change in mass number.

Electrons emitted during beta decay do not have same the energy because a very light particle called neutrino is also emitted along with the electrons that carry away the momentum and energy in varying amount leading to a difference in the energy and momentum of the emitted beta particles

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answer

 

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 if the radio active transformation is evoved with bete particals it is cslled beta -decay

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