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A radioactive element A on disintegratio...

A radioactive element A on disintegration gives two elements B and C. If B is helium and C is the element of atomic number 90 and atomic mass 234, the element A is:

A

`_92^238U`

B

`_88^234Ra`

C

`_90^234Sc`

D

`_91^234 Pa`

Text Solution

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The correct Answer is:
A
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