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JEEMAIN and NEET
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JEEMAIN PAST PAPERS
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2010
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Q)
A radioactive nucleus (initial mass number A and atomic number Z) emits 3
α
particles and 2 positrons. The ratio of number of neutrons to that of protons in the final nucleus will be
( A )
A
−
Z
−
12
Z
−
4
( B )
A
−
Z
−
8
Z
−
4
( C )
A
−
Z
−
4
Z
−
8
( D )
A
−
Z
−
4
Z
−
2
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