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The radioactive nucleide ""(90)^(134)Th ...

The radioactive nucleide `""_(90)^(134)Th` undergoes two successive `beta-` deacys followed by one `alpha`- decay. The atomic number and mass number respectively of the resulting radionucleide is :

A

94 and 230

B

90 and 230

C

92 and 230

D

92 and 234

Text Solution

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The correct Answer is:
B
`""_(92)^(234)Thoverset(2-overset(0)1e)to""_(92)^(234)Xoverset(-_(2)^(4)He)to""_(90)^(230)Y`
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