An element X loses one α- and two β-particles in three successive stages. The resulting element will be

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An isobar of X

An isotope of X

X itself

An isotone of X

answer is B.

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Detailed Solution

Let the reaction is ZXA⟶−α−−2AA−4⟶−βZ−1BA−4⟶−βZCA−4Therefore, X and C are isotope, i.e., same atomic number.

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