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In a Radioactive Decay, Neither the Atomic Number Nor the Mass Number Changes. Which of the Following Particles is Emitted in the Decay? - Physics

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Question

In a radioactive decay, neither the atomic number nor the mass number changes. Which of the following particles is emitted in the decay?

  • Proton

  • Neutron

  • Electron

  • Photon

Solution

Photon 

The atomic number and mass number of a nucleus is defined as the number of protons and the sum of the number of protons and neutrons present in the nucleus, respectively. Since in the decay, neither the atomic number nor the mass number change, it cannot be a beta-decay (release of electron, proton or neutron). Hence, the particle emitted can only be a photon.

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APPEARS IN

 HC Verma Solution for Concepts of Physics - Vol. 2 (2018 to Current)
Chapter 24: The Nucleus
MCQ | Q: 12 | Page no. 441

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Solution In a Radioactive Decay, Neither the Atomic Number Nor the Mass Number Changes. Which of the Following Particles is Emitted in the Decay? Concept: Radioactivity - Law of Radioactive Decay.
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