A radioactive nucleus with Z protons and N neutrons emits an α α -particle, 2 β β -particles and 2 gamma rays. The number of protons and neutrons in the nucleus left after the decay respectively, are
Text Solution
Verified by ExpertsThe correct answer is:
D
With emission of an 
particle 
mass number decreases by 4 unit and atomic number decrease by 2 units and with emission of 
particle atomic number increases by 2 units. So 
will remain same and 
become 
.
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