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A radioactive nucleus (initial mass numb...

A radioactive nucleus (initial mass number A and atomic number Z) emits `3alpha`-particles and 2 positrons. The ratio of number of neutrons to that of protons in the final nucleus will be

A

`(A - Z - 8)/(Z - 4)`

B

`(A - Z - 4)/(Z - 8)`

C

`( A - Z - 12)/(Z - 4)`

D

`(A - Z - 4)/(Z - 2)`

Text Solution

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The correct Answer is:
B
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DISHA PUBLICATION-NUCLEI-EXERCISE - 2 (CONCEPT APPLICATOR)
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  16. The half life of a radioactive substance is 20 minutes . The approxima...

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