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प्रश्न
If A is a radioactive element which emits an α - particle and produces 104Rf 259. Write the atomic number and mass number of the element A
उत्तर
In α decay
zXA `"αdecay"/263` x z - 2YA-4 + 2He4 ( α decay)
106x263 α decay 104 Rf259 + 2He4
In element A having atomic number is 106 and the mass number is 263.
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