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13 Cards in this Set
- Front
- Back
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Charge of proton, neutron and electron? |
P:+1.60x10^-19C N:0 E:-1.60x10^-19C |
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Mass of proton, neutron and electron? |
P:1.67x10^-27kg N:1.67x10^-27kg E:9.11x10^-31kg |
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Isotope |
Isotopes have the same atomic number but a different mass number |
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Specific charge |
Charge/mass Electrons have the biggest specific charge |
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Strong nuclear force |
Independent of charge, it repels till 0.5fm and ceases to exist past 3fm |
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Alpha tsdiation |
Mass number: 4 Atomic number: 2 Charge: 2+ |
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Beta radiation |
Beta plus: proton--> neutron+positron+electron neutrino Beta minus: neutron--> proton+electron+anti electron neutrino |
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Order of electromagnetic spectrum? |
Radio (largest wavelength) Microwave Infrared Visible Ultraviolet X-rays Gamma rays (smallest wavelength) |
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Photon energy |
E=hf H=6.63x10-34 |
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Annihilation and pair production |
Annihilation: particle and antiparticle meet and annihilate to produce two photons in opposite directions with equal energy Pair production: photon with sufficient energy splits into particle antiparticle pair |
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Energy-mass conservation |
E=mc^2 |
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Electron volt |
1MeV=1.60x10^-13 |
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Electron capture |
Electron is pulled into nucleus, proton and electron interact to form electron neutrino and a neutron with a W+ bosom carrier |
