Which of the following is emitted,when { }_{9 | vedclass

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(D) The nuclear decay reaction is given by: ${ }_{94}^{239} Pu \rightarrow { }_{92}^{235} U + { }_{Z}^{A} X$.Applying the law of conservation of mass

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Alpha particle

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(D) The nuclear decay reaction is given by: ${ }_{94}^{239} Pu \rightarrow { }_{92}^{235} U + { }_{Z}^{A} X$.Applying the law of conservation of mass number: $239 = 235 + A \Rightarrow A = 4$.Applying the law of conservation of atomic number: $94 = 92 + Z \Rightarrow Z = 2$.$A$ particle with mass number $4$ and atomic number $2$ is an alpha particle $({ }_{2}^{4} He)$.Therefore,an alpha particle is emitted during this decay.

Which of the following is emitted,when ${ }_{94}^{239} Pu$ decays into ${ }_{92}^{235} U$?

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