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Question: Answered & Verified by Expert
A positron is emitted from ${ }_{11}^{23} \mathrm{Na}$. The ratio of the atomic mass and atomic number of the resulting nuclide is
ChemistryChemical KineticsJEE AdvancedJEE Advanced 2007 (Paper 2)
Options:
  • A
    22/10
  • B
    22/11
  • C
    23/10
  • D
    $23 / 12$
Solution:
2965 Upvotes Verified Answer
The correct answer is:
23/10
$$
{ }_{11}^{23} \mathrm{Na} \longrightarrow{ }_{10}^{23} \mathrm{Na}+{ }_{-1}^0 e
$$

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