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The radioactive nuclide .(90)^(234) Th ...

The radioactive nuclide `._(90)^(234) Th` shows two successive `beta-` decay followed by one `alpha-` decay. The atomic number and mass number respectively of the resulting atom is:

A

92 and 234

B

94 and 230

C

90 and 230

D

92 and 230

Text Solution

Verified by Experts

The correct Answer is:
C
`""_(90)^(234)Th overset(beta-"decay")rarr ""_(91)^(234)X overset(beta-"decay")to ""_(92)^(234)Yoverset(alpha-"decay")to ""_(90)^(230)Th`
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