click below
click below
Normal Size Small Size show me how
7
Question | Answer |
---|---|
electron configurations | explanations of periodic of the arrangement of electrons w/in atoms |
valance electrons | electrons in he outermost shell |
electromagnetic radiation | consists of oscillating perpendicular electric and magnetic fields that travel through space at the same rate "spd of light" 2.998 x 10^8 m/s |
Spectrum | the distribution of intensities of wavelengths or frequencies of electromagnetic radiation emitted or absorbed by an object. |
wavelength | distance btwn adjacent crests (or troughs) in a wave |
frequency | # of complete waves passing a pt in a given period of time--that is, cycles per second or simply persecond, 1/s |
lower frequency = | longer wavelength |
higher frequency = | shorter wavelength |
per second is equivalent to | hertz (Hz) |
amplitude | height of the crest |
spd of light (c) | 2.998 x 10^8 m/s |
wavelength is measured in... | (m, nm. etc.) unit length |
Planck's constant | 6.626 x 10^-34 |
E = hv | E = hc/lambda |
photoelectric effect | certain metals exhibit a photoelectric effect: they emit electrons when illuminated by light of certain wavelengths |
dual nature | "wave" or "particle" characteristics. both ideas are needed to fully explain light's behavior |
diffraction | when waves of light pass thru such adjacent narrow slots, the waves are scattered so that the emerging light waves spread out |
refraction | bending of light by a prism and the diffraction of light by a diffraction grating, a device w/ a series of parallel, closely spaced small slits. |
quantize | To limit a variable or variables describing a physical system to discrete, distinct values. (photons are the quanta of energy) |
continuous spectrum | contains light of all wavelengths in the visible region |
principle quantum number | each allowed orbit was assigned an interger, n |