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If uranium ( mass number 238 and atomic ...

If uranium `(` mass number 238 and atomic number 92`)` emits an `alpha-`paticle, the produc has mass number and atomic number

A

234,90

B

236, 92

C

238,90

D

236,90

Text Solution

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The correct Answer is:
A
`""_(92)U^(238) to ""_(90)Th^(234) + ""_(2)He^4`
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