Key Terms
raisin pudding model
alpha particles
Rutherford nuclear model
quanta
photon
photoelectric effect
photoelectrons
threshold frequency
Planck’s constant
work function
electronvolt (eV)
atomic spectra
excited
energy level
quantized
wave–particle duality
de Broglie wavelength
protons
neutrons
nucleons
atomic number
neutron number
mass number
nucleon number
isotopes
nuclide
strong nuclear force
atomic mass unit (amu)
deuteron
deuterium
mass defect