A radiaoactive nucleus (initial mass number `A` and atomic number `Z` emits `3 a` - particles and 2 positrons The ratio of number of neutrons to that of proton 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
`_(Z)^(A)X overset (A - 12)rarr _(x - 8)V +3_(2)^(4) X_(e) + _(1)^(0)e ` `A - 12 - (Z- 8)` :. Required ratio = (A - Z - T)/(Z - 8)`
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