A) 4, 1
B) 3, 7
C) 8, 1
D) 4. 7
Correct Answer: A
Solution :
\[_{90}T{{h}^{228}}{{\xrightarrow{{}}}_{83}}B{{i}^{212}}+x_{2}^{4}\alpha +y_{1-}^{0}\beta \] 228 = 212 + 4x or 4x = 16 or x = 4 = 83 + 2x - y = 83 + 8 - y or y = 1You need to login to perform this action.
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