Question

Ni-51, with 28 protons, undergoes beta plus decay. The daughter atom then undergoes another beta plus decay. What is the seco

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Answer

Fe-51 with 26 proton

In Beta plus decay a proton convert to neutron

Hence atomic number decreases by 1 for every beta plus decay but mass number remain same

Since there is two beta decay so atomic number decreases by 2

New atomic number =28-2

New atomic number = 26

Mass number =51

Answer

Fe -51 with 26 proton

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