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A nuclide \(^{202}_{84} Y\) emits in succession an \(\alpha-particle\) and a \(\beta-particle\). The atomic number...

Physics
WAEC 2000

A nuclide \(^{202}_{84} Y\) emits in succession an \(\alpha-particle\) and a \(\beta-particle\). The atomic number of the resulting nuclide is

  • A. 198
  • B. 83
  • C. 82
  • D. 80
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Correct Answer: Option B
Explanation

\(^{202}_{84} Y\) → \(^4_2\)He + \(^0_{-1}\)e + \(^{98}_{83}\)X

Therefore, the atomic number of the resulting nuclide = 83.

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