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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 30 - Nuclear Physics > An element X decays, first by positron emission and then two α-particles are emitted in successive radioactive decay. If the product nucleus has a mass number 229 and atomic number 89, the mass number of atomic number of element X are.

An element X decays, first by positron emission and then two α-particles are emitted in successive radioactive decay. If the product nucleus has a mass number 229 and atomic number 89, the mass number of atomic number of element X are.

An element X decays first by positron emission and then two α-particles are emitted in successive radioactive decay. If the product nucleus has a mass number 229 and atomic number 89 the mass number of atomic number of element X are.