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Question

Consider two arbitrary decay equations and mark the correct alternative (s) given below
(I) 23092Un22992U
(II) 23092Up+22991Pa
Given: M(23092U)=230.033927u,
M (22992U)=229.03349u,mn=1.008665u,
M (22991Pa)=229.032089,mp=1.007825,1amu=931.5MeV

A
Only decay (i) is possible
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B
Only decay (ii)is possible
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C
Both the decay are possible
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D
Neither of the two decay is possible
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Solution

The correct option is D Neither of the two decay is possible
Check whether energy is released in the decay process, only then the process if feasible
(1) Energy released = Δmc2= (-229.03349 - 1.008665+ 230.033927)c2=8.228×103c2
Negative, not possible
(2)
Energy released = Δmc2=(230.0339271.007825229.032089)c2=5.987×103c2
Negative, not possible

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