A radioactive nucleus A finally transforms into a stable nucleus B. Then, A and B may be
A
isobars
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B
isotones
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C
isotopes
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D
none of these
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Solution
The correct option is D isotopes The nucleus of a radioisotope is unstable. In an attempt to reach a more stable arrangement of its protons and neutrons, the nucleus will spontaneously decompose to form a different nucleus. If the number of neutrons changes in the process, a different isotopes is formed.