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""(92)U^(238) undergoes alpha-decay givi...

`""_(92)U^(238)` undergoes `alpha`-decay giving rise to thorium. What is the mass number of the daughter nuclide ?

Text Solution

Verified by Experts

`""_(92)U^(238)overset (alpha -"decay")(to) ""_(90)X^(234) + ""_(2) He^(4) + Q ` (energy)
Hence mass number of daugther nucleus = 234
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