Flashcards in RADIOACTIVICTY AND NUCLEAR ENERGY Deck (6)
what happens to most positively charged alpha particles directed at thin gold foil?
they pass straight through
What happens if the alpha particle is traveling near the nucleus?
it's path will be deflected
what does Rutherford scattering experiment tell us?
-inside the atom there must be a small positively charged nuclei
-the nucleus must be small since few alpha particles are deflected
-it must be positive to repel positively charged alpha particles
at which point does an alpha particle that is deflected by 180 stop from the nucleus?
when it's electrical potential energy = it's initial kinetic energy
What is the most accurate method of getting a picture of a crystals atomic structure and why?
electron diffraction, because electrons are leptons and therefore do not interact through the strong nuclear force