superhelp101
  • superhelp101
Question:
Chemistry
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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superhelp101
  • superhelp101
When an atom releases a beta particle, the mass number decreases by one. the mass number increases by one. the atomic number increases by one. the atomic number remains the same.
superhelp101
  • superhelp101
@JFraser
JFraser
  • JFraser
what is the isotopic symbol for a beta particle?

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More answers

superhelp101
  • superhelp101
|dw:1438469062312:dw|
superhelp101
  • superhelp101
isn't it?
JFraser
  • JFraser
that's the one
JFraser
  • JFraser
now suppose an atom of carbon-14 undergoes beta decay
JFraser
  • JFraser
\[^{14}_{6}C \rightarrow ^0_{-1} \beta + ^A_Z?\]
JFraser
  • JFraser
in nuclear reactions, the \(total\) atomic number must be conserved, and the \(total\) mass number must also be conserved
superhelp101
  • superhelp101
oh okay
JFraser
  • JFraser
since the total atomic number \(must\) add up to 6, what must the other particle be to make the bottom "equation" true?
superhelp101
  • superhelp101
7?
JFraser
  • JFraser
since those are atomic numbers, what particle has an atomic number of 7?
superhelp101
  • superhelp101
nitrogen
JFraser
  • JFraser
and what about the mass number?
superhelp101
  • superhelp101
nitrogen atomic mass 14.00674
superhelp101
  • superhelp101
litium
JFraser
  • JFraser
you don't need the average mass of nitrogen, look at the mass numbers from the equation. What do they have to equal?
superhelp101
  • superhelp101
6
JFraser
  • JFraser
masses, not atomic numbers
superhelp101
  • superhelp101
14
JFraser
  • JFraser
very good
JFraser
  • JFraser
so the whole equation will look like: \[\large{^{14}_{6}C \rightarrow \space ^{0}_{-1} \beta + \space ^{A}_{7}N}\]
superhelp101
  • superhelp101
yes
JFraser
  • JFraser
\[\large{^{14}_{6}C \rightarrow \space ^{0}_{-1} \beta + \space ^{14}_{7}N}\]
JFraser
  • JFraser
so now that you have a completed beta decay equation, you can answer the question
superhelp101
  • superhelp101
C?
JFraser
  • JFraser
the atomic number goes from 6 to 7, so it must increase by one
JFraser
  • JFraser
good job
superhelp101
  • superhelp101
thx

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