³⁷₂₀Ca → ³⁷₁₉K + ⁰₁e
Explanation:
* ³⁷₂₀Ca: This represents the parent nucleus, Calcium-37, with 20 protons and 17 neutrons (37 - 20 = 17).
* ³⁷₁₉K: This represents the daughter nucleus, Potassium-37, with 19 protons and 18 neutrons. It has one fewer proton than the parent nucleus.
* ⁰₁e: This represents the emitted positron, which is a particle with the same mass as an electron but with a positive charge. It is designated as "e" with a superscript of 0 (for its mass number) and a subscript of +1 (for its charge).
Key Points about Positron Emission:
* Conversion of a Proton: Positron emission occurs when a proton within the nucleus is converted into a neutron, releasing a positron and a neutrino.
* Atomic Number Reduction: The emission of a positron reduces the atomic number of the nucleus by 1, changing the element.
* Isobar Formation: The daughter nucleus and parent nucleus are isobars, meaning they have the same mass number (37 in this case).
