Positron - Anti-particle of the electron, Anti electron neutrino - Emitted in beta - decay alongside the electron, electron neutrino - Emitted in beta + decay alongside the positron, Rest mass energy of the electron - 0.511 MeV, Rest mass energy of the proton - 938.257 MeV, Rest mass energy of the neutron - 938.551 MeV, Annihilation - Particle and antiparticle meet, Creation of proton antiproton pair needs how much energy - 3x10^-10 Joules, Creation of electron positron pair needs how much energy - 8.176 x 10^-14 Joules, Emitted when a particle and antiparticle meet - 2 (gamma) photons, Strong nuclear force is attractive - Between 0.5fm and 3fm, Strong nuclear force is repulsive - Below 0.5fm, Range of the EM force - Infinite, Strongest of the fundamental forces - Strong Nuclear, 2nd Strongest of the fundamental forces - Electromagnetic, 3rd strongest of the fundamental forces - Weak nuclear, Weakest of the findamental forces - Gravitational, Neutron = proton number up to how many protons - 20, Occurs in proton rich nuclei - Beta + decay, Occurs in neutron rich nuclei - Beta - Decay, Occurs in large nuclei - Alpha Decay, Change in atomic number in Beta + decay - -1, Change in atomic number in Beta - decay - +1, Change in atomic number in Alpha decay - -2, Change in mass number in Alpha decay - -4, Change in mass number in Beta - decay - No Change, Describe the role of gravity in nuclear stability - Negligible,

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