Understanding Positron Emission
Positron emission is a type of radioactive decay where a proton in the nucleus of an atom transforms into a neutron, emitting a positron (a positively charged anti-electron) and a neutrino.
Silicon-26 Decay
Silicon-26 (²⁶Si) is the isotope of silicon that undergoes positron emission. Here's the equation:
²⁶Si → ²⁶Al + β⁺ + νₑ
Breakdown:
* ²⁶Si: The parent nucleus, silicon-26.
* ²⁶Al: The daughter nucleus, aluminum-26.
* β⁺: The emitted positron.
* νₑ: The emitted electron neutrino.
Key Points:
* Atomic Number: The atomic number (number of protons) decreases by 1 during positron emission (Silicon has 14 protons, Aluminum has 13).
* Mass Number: The mass number (number of protons + neutrons) remains the same.
* Energy Release: The process releases energy in the form of the positron and neutrino.
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