Question:
In radioactive decay process, the negatively charged emitted $ \text{-} $ particles are
In radioactive decay process, the negatively charged emitted $ \text{-} $ particles are
Updated On: Jul 5, 2022
- the electrons present inside the nucleus
- the electrons produced as a result of the decay of neutrons inside the nucleus
- the electrons produced as a result of collisions between atoms
- the electrons orbiting around the nucleus
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The Correct Option is B
Solution and Explanation
Beta decay can involve the emission of either electrons or positrons. The electrons or positrons emitted in a $ \beta - $ decay do not exist inside the nucleus. They are only created at the time of emission, just as photons are created when an atom makes a transition from higher to a lower energy state. In negative $ \beta - $ decay a neutron in the nucleus is transformed into a proton, an electron and an antineutrino. Hence, in radioactive decay process, the negatively charged emitted $ \beta - $ particles are the electrons produced as a result of the decay of neutrons present inside the nucleus.
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Concepts Used:
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In the year 1911, Rutherford discovered the atomic nucleus along with his associates. It is already known that every atom is manufactured of positive charge and mass in the form of a nucleus that is concentrated at the center of the atom. More than 99.9% of the mass of an atom is located in the nucleus. Additionally, the size of the atom is of the order of 10-10 m and that of the nucleus is of the order of 10-15 m.
Read More: Nuclei
Following are the terms related to nucleus:
- Atomic Number
- Mass Number
- Nuclear Size
- Nuclear Density
- Atomic Mass Unit