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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

236 and 92

B

234 and 90

C

238 and 90

D

236 and 90

Text Solution

Verified by Experts

The correct Answer is:
B
`.^(92)U^(238) rarr ._(90)U^(234) + ._(2)^(4)He`
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Knowledge Check

  • If uranium (mass number = 238 and atomic number = 92) emits an alpha -particle, the product has mass number and atomic number respectively are

    A
    236 and 92
    B
    236 and 90
    C
    238 and 90
    D
    234 and 90

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    A
    236 and 92
    B
    234 and 90
    C
    238 and 90
    D
    236 and 90

  • An atom of mass number 15 and atomic number 7 captures an alpha- particle and then emits a proton. The mass number and atomic number of the resulting product will respectively be.

    A
    14 and 2
    B
    15 and 3
    C
    16 and 4
    D
    18 and 8

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