GENERAL KNOWLEDGE

GK

NUCLEAR SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In gamma emission, change in nucleon number is
A
zero
B
definite
C
increase by 1
D
decreases by 1
Explanation: 

Detailed explanation-1: -In gamma decay, a nucleus changes from a higher energy state to a lower energy state through the emission of electromagnetic radiation(photons). The number of protons (and neutrons) in the nucleus does not change in this process, so the parent and daughter atoms are the same chemical element.

Detailed explanation-2: -The emission of gamma rays does not alter the number of protons or neutrons in the nucleus but instead has the effect of moving the nucleus from a higher to a lower energy state (unstable to stable). Gamma ray emission frequently follows beta decay, alpha decay, and other nuclear decay processes.

Detailed explanation-3: -Gamma radiation is electromagnetic radiation that is emitted by an unstable nucleus of an atom during radioactive decay. A nucleus in an unstable state may fall to a more stable state by the emission of energy as gamma radiation. The radiation has a dual nature, that of a wave and a particle with zero mass at rest.

Detailed explanation-4: -Answer and Explanation: When an isotope releases gamma radiation, it does not change the atomic number of the atom in question. This is because gamma radiation is the emission of electromagnetic energy from the nucleus in the form of photons, discrete packets of energy.

Detailed explanation-5: -Gamma rays originate from the settling process of an excited nucleus of a radionuclide after it undergoes radioactive decay whereas X-rays are produced when electrons strike a target or when electrons rearrange within an atom.

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