1. Oct 26, 2014 #1

   desmond iking

   

   1. The problem statement, all variables and given/known data
   
   An atom of 28_13 AI decays into stable nuclide 28_14 Si by emitiing a beta particle.
   What's 28_14 Si ?
   the ans given is positive ion?
   
   in my opinion, it should be a neutral atom... which is correct?
   2. Relevant equations
   
   
   3. The attempt at a solution

    

   desmond iking, Oct 26, 2014
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3. Oct 26, 2014 #2

   Doc Al

   

   Staff: Mentor

   What's your reasoning? Hint: What's a beta particle?

    

   Doc Al, Oct 26, 2014
4. Oct 26, 2014 #3

   desmond iking

   

   If the 28 _13 nucleus decay then the positive ion is formed? Am I right? But here's an atom not nucleus

    

   desmond iking, Oct 26, 2014
5. Oct 26, 2014 #4

   haruspex

   

   Science Advisor

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   Think about conservation of charge. If a beta particle is emitted, what does that tell you about what remains?

    

   haruspex, Oct 26, 2014

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