what is radioactivity ? and describe it's types briefly?
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RADIOACTIVITY: Natural radioactivity is a spontaneous and self disruptive activity exhibited by a number of heavy elements occurring in nature. the word spontaneous means shear out of nature of the element and self disruptive means that the element disintegrates itself which means no external provocation influences the emission.
RADIOACTIVITY is therefore the external property by virtue of which a heavy element disintegrates itself without being forced by an external agent to do so.
There are three types of radations:
● Alpha rays
● Beta rays
● Gamma rays
☆ Alpha rays:
1. An alpha particle carries a double positive charge of proton which is equal to the charge on helium nucleus.
2. Mass of an alpha particle is roughly four times that of hydrogen atom which is equal to the mass of helium nucleus.
3. Alpha rays affect photographic plate slightly.
☆ Beta rays:
1. A beta particle carries 1.6×10^-19C of negative charge which means charge on the electron.
2. The mass of beta particle is 9.1×10^-31 kg which is same as that of electron.
3. They affect a photographic plate.
☆ Gamma rays:
1. Gamma rays are not deflected by electric and magnetic fields, showing that they do not carry any charge.
2. The rest mass of a gamma ray photon is zero.
3. Gamma rays affect a photographic plate more than beta particles.
HOPE IT HELPS...✌
RADIOACTIVITY: Natural radioactivity is a spontaneous and self disruptive activity exhibited by a number of heavy elements occurring in nature. the word spontaneous means shear out of nature of the element and self disruptive means that the element disintegrates itself which means no external provocation influences the emission.
RADIOACTIVITY is therefore the external property by virtue of which a heavy element disintegrates itself without being forced by an external agent to do so.
There are three types of radations:
● Alpha rays
● Beta rays
● Gamma rays
☆ Alpha rays:
1. An alpha particle carries a double positive charge of proton which is equal to the charge on helium nucleus.
2. Mass of an alpha particle is roughly four times that of hydrogen atom which is equal to the mass of helium nucleus.
3. Alpha rays affect photographic plate slightly.
☆ Beta rays:
1. A beta particle carries 1.6×10^-19C of negative charge which means charge on the electron.
2. The mass of beta particle is 9.1×10^-31 kg which is same as that of electron.
3. They affect a photographic plate.
☆ Gamma rays:
1. Gamma rays are not deflected by electric and magnetic fields, showing that they do not carry any charge.
2. The rest mass of a gamma ray photon is zero.
3. Gamma rays affect a photographic plate more than beta particles.
HOPE IT HELPS...✌
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Answered by
1
Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability. Because the nucleus experiences the intense conflict between the two strongest forces in nature, it should not be surprising that there are many nuclear isotopes which are unstable and emit some kind of radiation. The most common types of radiation are called alpha, beta, and gamma radiation, but there are several other varieties of radioactive decay.
alpha,beta and Gama are types of radioactivity.
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