GK
NUCLEAR SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The changed caused by energy in an atom
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A change in the number of protons or neutrons in an atom
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The reaction of protons and neutrons being combined
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A change in the identity or characteristics of a nucleus
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Detailed explanation-1: -nuclear reaction, change in the identity or characteristics of an atomic nucleus, induced by bombarding it with an energetic particle. The bombarding particle may be an alpha particle, a gamma-ray photon, a neutron, a proton, or a heavy ion.
Detailed explanation-2: -Introduction to Nuclear Reactions While the chemical properties of the compounds can change drastically, the identity of the atoms remains constant in these reactions.
Detailed explanation-3: -Nuclear reactions involve a change in an atom’s nucleus, usually producing a different element. Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei.
Detailed explanation-4: -Unlike a chemical reaction, a nuclear reaction results in a significant change in mass and an associated change of energy, as described by Einstein’s equation. Nuclear reactions are accompanied by large changes in energy, which result in detectable changes in mass.
Detailed explanation-5: -Transmutation: The change in the identity of a nucleus as a result of a change in the number of protons. So, all nuclear reactions are transmutations.