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What is group displacement law ? An element belonging to group 1 decay by β c − − β emission. To which group of the periodic table the daughter element will belong ? Select the correct answer from above options

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Group displacement law : : When a radioactive element emits a . a An α − α particle, it is converted into an atom of a daughter element of atomic number two less and atomic mass four less than the parent element and the new element occupies a place two groups lower ( i . e . , ( to the left ) ) in the periodic table. b . b A β − β particle, it is converted into ta new element of the same atomic mass, but with atomic number one greater than the parent element and the new element occupies a place one group higher ( i . e . , ( to the right ) ) in the periodic table. The daughter table. The daughter element will belong to group I I I after β − β emmision.

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